This is a replacement set of Traxxas Extreme Heavy Duty Caster Blocks in Gray.
Replacement left and right caster blocks (c-hubs) for 9180 and 9181-series 2WD Extreme Heavy Duty Upgrade Kits. Includes 3x26 mm hinge pins (2) and 3x15 mm screws (2). Parts are compatible with non-EHD parts as well as Traxxas aluminum accessories.