This is a set of Front and Rear Wheels for the Tamiya RM01 Chassis Cars. FEATURES: Plastic construction, white in color INCLUDES: Two Front and two Rear Wheels REQUIRES: Front Wheels, TAMC1483 Rear Wheels, TAMC1484 SPECS: Front: 1.4" (36.2mm) diameter, 0.94" (24mm) wide Rear: 1.4" (36.2mm) diameter, 1.4" (35.5mm) wide Rear Hex Size: 10mm jxs 03/28/12 ir/jxs