Features: _x000D_Made of high quality nylon material, these flat washers have long service._x000D__x000D_Flat washers can spread a load, and prevent damage to the surface being fixed, and prevent leakage. _x000D_They can be used as a spacer, wear pad, pre-load indicating device, locking device, and to reduce vibration._x000D__x000D_Flat washer is applied when the hole is a larger diameter than the fixing nut. There are many different sizes in this set. _x000D_Each set contains many flat washers that can be used for a long time, so you don't have to run to hardware store looking for washers for quite a while. _x000D__x000D__x000D_Specification: _x000D_Material: Nylon _x000D_Color: Black, White (Optional) _x000D_Size & Quantity: _x000D_M2 100PCS_x000D_M2.5 100PCS_x000D_M3 100PCS_x000D_M4 100PCS_x000D_M5 50PCS_x000D_M6 50PCS _x000D_Weight: 58g / 2oz(approx.) _x000D__x000D__x000D_Package list: _x000D_1 box * Washers 1Made of high quality nylon material, these flat washers have long service. 2Flat washers can spread a load, and prevent damage to the surface being fixed, and prevent leakage. 3They can be used as a spacer, wear pad, pre-load indicating device, locking device, and to reduce vibration. 4Flat washer is applied when the hole is a larger diameter than the fixing nut. There are many different sizes in this set. 5Each set contains many flat washers that can be used for a long time, so you don't have to run to hardware store looking for washers for quite a while.