Traxxas caster blocks (c-hubs), 6061-t6 aluminum (red-anodized), left & right 38-6823r description: left and right red aluminum caster blocks improve the appearance, ruggedness, and control of your traxxas model. The billet 6061-t6 aluminum construction adds strength and precision where you want it most. The brilliantly-anodized finish adds vibrant color to your vehicle and features a high-contrast laser etched trx logo. Accessory part for these models: ford fiesta st rally hoss 4x4 vxl rustler 4x4 vxl rustler 4x4 slash 4x4 ultimate slash 4x4 vxl slash 4x4 stampede 4x4 unassembled kit stampede 4x4 vxl stampede 4x4 xo-1