(!) Since support from Microsoft will end on January 14th, 2020, Windows 7 will be excluded from the recommended environment from December 15th, 2019 on this site. Vì lý do Microsoft kết thúc hỗ trợ cho Windows 7 vào ngày 14/01/2020, Windows 7 sẽ là hệ điều hành không được khuyến khích sử dụng với trang web này từ ngày 15/12/2019.
Tel: 0222-361-1555
Email: cs@misumi.com.vn
8:00 - 17:00 (Mon - Sat)
Search by Category / Brand Tìm theo danh mục, nhãn hiệu
Search by Category Tìm theo danh mục
- Do bão Yagi, thời gian giao hàng đối với khách miền Bắc sẽ kéo dài thêm 2-3 ngày hoặc hơn. Xin Quý khách thông cảm!
Due to Typhoon Yagi, delivery time for Northern customers will be extended by 2-3 days or more. We appreciate your understanding!
Tooling（Retainable blade diameter：0.5～7.0）
Search by specifying the lower class categoryTìm kiếm bằng cách chỉ định danh mục lớp thấp hơn
Shrink Fit Holders
Milling Chucks
Milling Cutter Arbors
Collet Holders
Drill Chucks
Tap Holders
Collets
Tooling-Related Equipment
Presetters
Products for Coolants
Brand |
|
|---|---|
| CAD |
|
| Days to Ship |
|
13 itemsMặt hàng
- Sort By
-
You can add up to 6 items per a category to the compare list.
YUKIWA SEIKO
Highly versatile tooling to European standards
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System BT30 - - 0.5～7.0 Main Body Machining Centers - 60 ～ 105 - - From: 7,359,869 VND Days to Ship: Số ngày giao hàng: 6 Day(s) or more 
6 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
BT40/BT50 New Drill Mill Chuck
YUKIWA SEIKO
High rigidity, high precision drill mill chuck compatible with high pressure coolants
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System BT40 - - 0.5～7.0 Main Body Machining Centers - 60 - - From: 8,275,009 VND Days to Ship: Số ngày giao hàng: 6 Day(s) or more
6 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
HSK40A/50A/63A New Drill Mill Chuck
YUKIWA SEIKO
The holder body collet insertion part is thick, with excellent rigidity; variations in accuracy have been kept to a minimum.
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System HSK-A 40 ～ 63 - 0.5～7.0 Main Body Machining Centers - 60 ～ 90 - - From: 9,582,210 VND Days to Ship: Số ngày giao hàng: 6 Day(s) or more
6 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
Adjustable Shank New Drill Mill Chuck
YUKIWA SEIKO
High rigidity, high precision drill mill chuck compatible with high pressure coolants
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System - - - 0.5～7.0 Main Body Generic Machine - - - - From: 3,926,129 VND Days to Ship: Số ngày giao hàng: 6 Day(s) or more
6 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
Straight Shank EY Chuck for Lathes
YUKIWA SEIKO
Highly versatile tooling to European standards
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System - - - 0.5～7.0 Main Body NC Lathe - - - - From: 3,210,856 VND Days to Ship: Số ngày giao hàng: 6 Day(s) or more
6 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
Straight shank new Drill Mill chuck for use with Milling Chuck
YUKIWA SEIKO
High rigidity, high precision drill mill chuck compatible with high pressure coolants
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System - - - 0.5～7.0 Main Body Generic Machine - - - - From: 3,104,628 VND Days to Ship: Số ngày giao hàng: 6 Day(s) or more
6 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
TQC Holder New Drill Mill Chuck
YUKIWA SEIKO
It has been well proven as tooling for machines. Demonstrates outstanding precision and rigidity, and minimizes the required space for tool change.
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System - - - 0.5～7.0 Main Body Generic Machine - 30 - - From: 9,057,362 VND Days to Ship: Số ngày giao hàng: 6 Day(s) or more
6 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
Pull Thread Type MT Shank New Drill Mill Chuck
YUKIWA SEIKO
High rigidity, high precision drill mill chuck compatible with high pressure coolants
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System - - - 0.5～7.0 Main Body Generic Machine - - - - From: 3,346,396 VND Days to Ship: Số ngày giao hàng: 8 Day(s) or more
8 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
Tang type MT shank new drill mill chuck
YUKIWA SEIKO
High rigidity, high precision drill mill chuck compatible with high pressure coolants
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System - - - 0.5～7.0 Main Body Generic Machine - - - - From: 3,204,365 VND Days to Ship: Số ngày giao hàng: 6 Day(s) or more
6 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
15T/S20T/BT30/BT35 New Drill Mill Chuck
YUKIWA SEIKO
High rigidity, high precision drill mill chuck compatible with high pressure coolants
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System BT30 - - 0.5～7.0 Main Body Machining Centers - 45 ～ 120 - - From: 7,321,115 VND Days to Ship: Số ngày giao hàng: 6 Day(s) or more
6 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
YUKIWA SEIKO
Highly versatile tooling to European standards
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System - - - 0.5～7.0 Main Body Machining Centers - - - - From: 3,215,774 VND Days to Ship: Số ngày giao hàng: 8 Day(s) or more
8 Day(s) or more
-
You can add up to 6 items per a category to the compare list.
Straight shank new Drill Mill chuck for use with side lock
YUKIWA SEIKO
High rigidity, high precision drill mill chuck compatible with high pressure coolants
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System - - - 0.5～7.0 Main Body Generic Machine - - - - From: 3,332,429 VND Days to Ship: Số ngày giao hàng: 9 Day(s)
9 Day(s)
-
You can add up to 6 items per a category to the compare list.
Jacobs Taper Shank New Drill Mill Chuck
YUKIWA SEIKO
High rigidity, high precision drill mill chuck compatible with high pressure coolants
Spindle types HSK type Tool Type Retainable blade diameter(mm) Product Category Applicable Manufacturing Machinery (main unit) Chuck Type Holder Length L(mm) Maximum Allowable Rotational Speed(min-1) Coolant System - - - 0.5～7.0 Main Body Generic Machine - - - - From: 3,947,571 VND Days to Ship: Số ngày giao hàng: 6 Day(s) or more
6 Day(s) or more
| BrandNhãn hiệu |
|---|
| Product SeriesDòng sản phẩm |
| From |
| Days to ShipSố ngày giao hàng |
| Spindle types |
| HSK type |
| Tool Type |
| Retainable blade diameter(mm) |
| Product Category |
| Applicable Manufacturing Machinery (main unit) |
| Chuck Type |
| Holder Length L(mm) |
| Maximum Allowable Rotational Speed(min-1) |
| Coolant System |
You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | |
| BrandNhãn hiệu | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO | YUKIWA SEIKO |
| Product SeriesDòng sản phẩm | Straight shank new Drill Mill chuck for use with Milling Chuck | ||||||||||||
| From | 7,359,869 VND | 8,275,009 VND | 9,582,210 VND | 3,926,129 VND | 3,210,856 VND | 3,104,628 VND | 9,057,362 VND | 3,346,396 VND | 3,204,365 VND | 7,321,115 VND | 3,215,774 VND | 3,332,429 VND | 3,947,571 VND |
| Days to ShipSố ngày giao hàng | 6 Day(s) or more | 6 Day(s) or more | 6 Day(s) or more | 6 Day(s) or more | 6 Day(s) or more | 6 Day(s) or more | 6 Day(s) or more | 8 Day(s) or more | 6 Day(s) or more | 6 Day(s) or more | 8 Day(s) or more | 9 Day(s) | 6 Day(s) or more |
| Spindle types | BT30 | BT40 | HSK-A | - | - | - | - | - | - | BT30 | - | - | - |
| HSK type | - | - | 40 ～ 63 | - | - | - | - | - | - | - | - | - | - |
| Tool Type | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Retainable blade diameter(mm) | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 | 0.5～7.0 |
| Product Category | Main Body | Main Body | Main Body | Main Body | Main Body | Main Body | Main Body | Main Body | Main Body | Main Body | Main Body | Main Body | Main Body |
| Applicable Manufacturing Machinery (main unit) | Machining Centers | Machining Centers | Machining Centers | Generic Machine | NC Lathe | Generic Machine | Generic Machine | Generic Machine | Generic Machine | Machining Centers | Machining Centers | Generic Machine | Generic Machine |
| Chuck Type | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Holder Length L(mm) | 60 ～ 105 | 60 | 60 ～ 90 | - | - | - | 30 | - | - | 45 ～ 120 | - | - | - |
| Maximum Allowable Rotational Speed(min-1) | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Coolant System | - | - | - | - | - | - | - | - | - | - | - | - | - |
Loading...Tải…
ConfigureTạo
Specification/DimensionsĐặc điểm kỹ thuật / Kích thướcĐặc điểm kỹ thuật / Kích thước
-
Spindle types
- BT30
- BT40
- BT50
- HSK-A
- HSK-E
-
HSK type
-
Tool Type
- end mill
- drill
- Reamer
- Facemill
- Tap
- Boring
-
Retainable blade diameter(mm)
- 0.25～0.50
- 0.25 to 6
- 0.25～ 6
- 0.3~3
- 0.3～8
- 0.45 ～0.55
- 0.45～3.25
- 0.45～4.05
- 0.45～6.05
- 0.5 to 0.75
- 0.50 to 0.75
- 0.5～5.0
- 0.5～ 6
- 0.5～6.5
- 0.5～7.0
- 0.5 to 8
- 0.5 ～ 8
- 0.5～8
- 0.5～ 8
- 0.5–10
- 0.5～10.0
- 0.5～13
- 0.5～13.0
- 0.5～16.0
- 0.55 ～0.65
- 0.65 ～0.75
- 0.75 ～0.85
- 0.75～1.0
- 0.75～1.00
- 0.8～6.5
- 0.85 ～0.95
- 0.9 to 1.0
- 0.95 ～1.05
- 1
- 1.0～0.5
- 1.0~1.25
- 1.00～1.25
- 1.0~6.0
- 1.0～8.0
- 1.0～10
- 1 to 13
- 1.05 ～1.15
- 1.15 ～1.25
- 1.25 ～1.35
- 1.25～1.5
- 1.25～1.50
- 1.35 ～1.45
- 1.4 to 1.5
- 1.45 ～1.55
- 1.5
- 1.5-13
- 1.5～1.0
- 1.50～1.75
- 1.5～1.75
- 1.5 to 10
- 1.5 ～10
- 1.5～13
- 1.5～20.0
- 1.55 ～1.65
- 1.65 ～1.75
- 1.75 ～1.85
- 1.75～2.0
- 1.75～2.00
- 1.85 ～1.95
- 1.95 ～2.05
- 2
- 2.0～1.5
- 2.0～2.25
- 2.00～2.25
- 2.0～10.0
- 2.05 ～2.15
- 2.15 ～2.25
- 2.25 ～2.35
- 2.25～2.5
- 2.25～2.50
- 2.35 ～2.45
- 2.4～2.5
- 2.45 ～2.55
- 2.5
- 2.5 to 2.0
- 2.5～2.75
- 2.50～2.75
- 2.5–3.0
- 2.5 to 13
- 2.5 ～13
- 2.5～13
- 2.5 to 16
- 2.5 ～16
- 2.5～16.0
- 2.5 to 20
- 2.5 ～20
- 2.5～20.0
- 2.5～20
- 2.55 ～2.65
- 2.65 ～2.75
- 2.675～3.175
- 2.75 ～2.85
- 2.75～3.0
- 2.75～3.00
- 2.75～3.25
- 2.85 ～2.95
- 2.9～3.0
- 2.925～3.175
- 2.95 ～3.05
- 2.95～3.05
- 2.95～8.05
- 3
- 3.0～2.5
- 3.00～3.25
- 3~3.5
- 3.0–3.5
- 3–4
- 3–6
- 3～ 6
- 3～ 8
- 3–10
- 3 to 12
- 3.0～12.5
- 3 to 16
- 3.0～16.0
- M3 to M16
- 3.0~20.0
- 3.05 ～3.15
- 3.05～3.15
- 3.125～3.225
- 3.15 ～3.25
- 3.15～3.25
- 3.175
- 3.25 ～3.35
- 3.25～3.35
- 3.25～3.50
- 3.25～3.75
- 3.35 ～3.45
- 3.35～3.45
- 3.4~3.5
- 3.40～3.50
- 3.45 ～3.55
- 3.45～3.55
- 3.5～3.0
- 3.50～3.75
- 3.5～4.0
- 3.5～20.0
- 3.55 ～3.65
- 3.55～3.65
- 3.65 ～3.75
- 3.65～3.75
- 3.75 ～3.85
- 3.75～3.85
- 3.75～4.00
- 3.75～4.25
- 3.75～ 4.25
- 3.85 ～3.95
- 3.85～3.95
- 3.9～4.0
- 3.90～4.00
- 3.95 ～4.05
- 3.95～4.05
- 4
- 4.0～3.5
- 4.0 to 4.2
- 4.00～4.25
- 4~4.5
- 4.0–4.5
- 4–5
- 4.05 ～4.15
- 4.05～4.15
- 4.15 ～4.25
- 4.15～4.25
- 4.25 ～4.35
- 4.25～4.35
- 4.25～4.50
- 4.25～4.75
- 4.25～ 4.75
- 4.35 ～4.45
- 4.35～4.45
- 4.4～4.5
- 4.40～4.50
- 4.45 ～4.55
- 4.45～4.55
- 4.5～4.0
- 4.50～4.75
- 4.5–5.0
- 4.55 ～4.65
- 4.55～4.65
- 4.65 ～4.75
- 4.65～4.75
- 4.7125～4.8125
- 4.75 ～4.85
- 4.75～4.85
- 4.75～5.00
- 4.75 to 5.25
- 4.8～5.0
- 4.85 ～4.95
- 4.85～4.95
- 4.9~5.0
- 4.90～5.00
- 4.95 ～5.05
- 4.95～5.05
- 5
- 5.0～4.0
- 5.0～4.5
- 5.00～5.25
- 5.0～5.5
- 5～5.5
- 5–6
- 5.0～25.0
- 5.0～32.0
- 5.05 ～5.15
- 5.05～5.15
- 5.15 ～5.25
- 5.15～5.25
- 5.25 ～5.35
- 5.25～5.35
- 5.25～5.50
- 5.25～5.75
- 5.35 ～5.45
- 5.35～5.45
- 5.4～5.5
- 5.40～5.50
- 5.45 ～5.55
- 5.45～5.55
- 5.5
- 5.5～5.0
- 5.50～5.75
- 5.5 to 6.0
- 5.5–6.0
- 5.55 ～5.65
- 5.55～5.65
- 5.65 ～5.75
- 5.65～5.75
- 5.75 ～5.85
- 5.75～5.85
- 5.75～6.00
- 5.85 ～5.95
- 5.85～5.95
- 5.9～6.0
- 5.90～6.00
- 5.95 ～6.05
- 5.95～6.05
- 6
- 6.0～5.0
- 6.0～5.5
- 6 to 6.5
- 6.0–6.5
- 6–7
- 6.0～25.0
- 6.05～6.15
- 6.15～6.25
- 6.2
- 6.25～6.35
- 6.35～6.45
- 6.4～6.5
- 6.45～6.55
- 6.5～6.0
- 6.5 to 7.0
- 6.55～6.65
- 6.65～6.75
- 6.75～6.85
- 6.85～6.95
- 6.9～7.0
- 6.95～7.05
- 7
- 7.0～6.0
- 7.0～6.5
- 7.0～7.5
- 7～7.5
- 7–8
- 7.05～7.15
- 7.15～7.25
- 7.25～7.35
- 7.35～7.45
- 7.4～7.5
- 7.45～7.55
- 7.5～8.0
- 7.55～7.65
- 7.65～7.75
- 7.75～7.85
- 7.85～7.95
- 7.9～8.0
- 7.95～8.05
- 8
- 8.0～7.0
- 8~8.5
- 8.0～8.5
- 8–9
- 8.4～8.5
- 8.5
- 8.5～9.0
- 8.9～9.0
- 9
- 9.0～8.0
- 9.0～9.5
- 9～9.5
- 9–10
- 9.4～9.5
- 9.5 to 10.0
- 9.9～10.0
- 10
- 10.0～9.0
- 10.0 ～10.5
- 10.0～10.5
- 10～10.5
- 10~11
- 10.4~10.5
- 10.5
- 10.5～11.0
- 10.9～11.0
- 11
- 11.0～10.0
- 11.0～11.5
- 11～11.5
- 11~12
- 11.4～11.5
- 11.5～12.0
- 11.9～12.0
- 12
- 12.0～11.0
- 12.0～12.5
- 12～12.5
- 12~13
- 12.4~12.5
- 12.5
- 12.5～13.0
- 12.9～13.0
- 13.0～12.0
- 13.0～13.5
- 13～14
- 13.4～13.5
- 13.5～14.0
- 13.9~14.0
- 14
- 14.0～13.0
- 14.0～14.5
- 14~15
- 14.4～14.5
- 14.5～15.0
- 14.9～15.0
- 15.0～14.0
- 15.0～15.5
- 15~16
- 15.4～15.5
- 15.5～16.0
- 15.9～16.0
- 16
- 16.0～15.0
- 16.0～16.5
- 16～17
- 16.0～32.0
- 16.4～16.5
- 16.5～17.0
- 16.9～17.0
- 17.0～16.0
- 17.0～17.5
- 17～18
- 17.4～17.5
- 17.5～18.0
- 17.9～18.0
- 18
- 18.0～17.0
- 18.0～18.5
- 18~19
- 18.4～18.5
- 18.5～19.0
- 18.9～19.0
- 19
- 19.0～18.0
- 19.0～19.5
- 19～20
- 19.4～19.5
- 19.5～20.0
- 19.9～20.0
- 20
- 20.0～19.0
- 21
- 21.0～20.0
- 22
- 22.0～21.0
- 23
- 23.0～22.0
- 24
- 24.0～23.0
- 25
- 25.0～24.0
- 28.0～27.0
- 30.0～29.0
- 32
- 32.0～31.0
- M36
- 40
- 42
- 50
- 50.8
-
Product Category
- Main Body
- Attachments/Accessories
- Heating and Cooling Equipment
- Measuring equipment
-
Applicable Manufacturing Machinery (main unit)
- Machining Centers
- Generic Machine
- NC Lathe
-
Chuck Type
- Straight collet
- Shrink fit
- Side lock
-
Holder Length L(mm)
- 15.5
- 16
- 16.5
- 19.5
- 20
- 24.5
- 25
- 26.5
- 29
- 30
- 33
- 34
- 35
- 37
- 38.3
- 39
- 40
- 44
- 45
- 47
- 48
- 50
- 52
- 54
- 54.4
- 55
- 55.5
- 55.5～62.5
- 60
- 62
- 62.5
- 65
- 65.5～72.5
- 66
- 67.5
- 68.5
- 70
- 74
- 75
- 76.7
- 77
- 79.5～91.5
- 80
- 81
- 82
- 84
- 84.5
- 84.5～96.5
- 85
- 85.5
- 86
- 90
- 90.5
- 91
- 93
- 94.5
- 95
- 95/135/165
- 96
- 97.5
- 98
- 100
- 100/140/170
- 105
- 105.5
- 107
- 107.5
- 109.5
- 110
- 112.0
- 113
- 115
- 120
- 120/160/190
- 121
- 122
- 123
- 125
- 125/175/205
- 127
- 129.5
- 130
- 131.5
- 132
- 135
- 137
- 137.5
- 140
- 145
- 148
- 149.5
- 150
- 155
- 160
- 162.5
- 164.5
- 165
- 167
- 167.5
- 169
- 174.0
- 175
- 176.5
- 180
- 180.5
- 181.0
- 182.5
- 185
- 186.5
- 190
- 193.5
- 195
- 200
- 202.5
- 210
- 218.0
- 220
- 225
- 226.0
- 240
- 250
- 255
- 275
- 283
- 285
- 300
- 350
- 375
-
Maximum Allowable Rotational Speed(min-1)
-
Coolant System
- Center Through (Blade Through)
- Gap Through
How can we improve?
How can we improve?
While we are not able to respond directly to comments submitted in this form, the information will be reviewed for future improvement.
Customer Privacy Policy
Thank you for your cooperation.
While we are not able to respond directly to comments submitted in this form, the information will be reviewed for future improvement.
Please use the inquiry form.
Customer Privacy Policy