This is a set of replacement Traxxas 12mm hex wheel hubs with 1.5x8mm axle pins, and are intended for use with the Traxxas 1/16 Slash, and 1/16 E-Revo vehicles.
Accessory part(s) for these models:
1/16 E-REVO RTR W/ESC
1/16 E-REVO VXL RTR W/TSM
1/16 SLASH 4WD RTR W/ ESC