Black Anodized Aluminum Spacer Bushing 3/8" OD x 3/16" ID--Fits M4 or #8 bolts
Black Anodized Aluminum Spacer 3/8" OD x 3/16" ID---Fits M4/M5 or #8/#10 bolts. Finish Black Anodized. Material T-6061 Aluminum. Product information: All aluminum spacers have an acid washed finish that is compatible with anodizing and welding.