Multi-colored CNC machined aluminium 6061 washer for screws For the aluminum washers,due to the aluminum material,it can be anodized many colors.It is hot selling in the market. We have two size in our stock.M3x7x2.5mm washer are match with socket head screws while M3x8x2mm are match with Aluminum Socket Button Screws We also have Aluminum Countersunk Washer,Aluminum Flat Washer, Nylon Washer,Countersunk Fender Washer Features: 1. Made of 6061 Aluminum Alloy, lightweight, strong hardness, secure. 2. Increase the parts' contact area with bolt or nut, prevent the part surface from being worn. 3. Suitable for RC Airplanes Boats Cars FPV Helicopters