[200PCS Copper Crush Metric Washers Assortment Kit]: Includes 9 sizes of flat sealing washers in , M6, M8, M10, M12, and M14 Size: (I/D x O/D x Depth)*9*1 30pcs,M6*10*1 30pcs,M6*12*1 20pcs,M8*12*1 20pcs,M8*14*1 20pcs,M10*14*1 20pcs,M12*16*1 20pcs,M12*18*1.5 20pcs,M14*18*1 20pcs [High-Quality Copper Material]: Offers superior corrosion resistance and superior durability, making them perfect for a of applications. [Crushable Design]: Helps to a secure, reliable seal between two surfaces, and also helps to prevent liquid and gas leakage. [Convenient Plastic Storage Case]: Makes it easy to store and organize your washers. [perfect for a of Applications]: Automotive repair, plumbing, construction and more. Perfect solution for all of your sealing needs. Colour: Material:copper Package Contents: 200 x copper washers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.