AD12/V3/RE - These 4 replica 32mm and 34mm RED anodized FULL ALLOY brake rotors and brake calipers are the perfect scale touch for 1/10 nitro or electric touring cars. These aluminium 12mm hex adaptors fit behind your rims to hide the inside of the car and give that "racing" look. Front rotors are bigger in diameter than rear rotors, too, for maximum realism !! Can be installed on cars using 5x10mm bearings or bushings (included). If using 5x11mm, available separately are the needed adaptors.