This set of flat washers are made of high quality Stainless steel,Flat washers can spread a load, and prevent damage to the being fixed, and insulate steel screws from . Can be used as a spacer, wear pad, pre-load indicating device, locking device, and to reduce vibration. Flat washer is applied when the hole is a larger diameter than the fixing nut. There are many different sizes of washers in this set from which you can use for different purposes. This set includes many flat washers that can be used for a long time, so you don't have to run to looking for washers for quite a while.<br><br>name:washer combination Type: Flat washer Specification: M2 25PCS M2.5 25PCS M3 25PCS 25PCS M5 25PCS M6 25PCS M8 20PCS M10 10PCS Colour:Silver Material:stainless steel<br><br>Package Contents: 1 set x Flat gasket assembly<br><br>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.