100 Pack Black 40mm Rear Wheels with Spokes for Co2 Dragsters Monitoring the growth of the

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Mounting holes are 21

100 Pack Black 40mm Rear Wheels with Spokes for Co2 Dragsters Monitoring the growth of the100 Pack black rear wheels with spokes for Co2 dragster cars Each wheel is made of durable polypropylene, constructed in one piece, and features an axle hole that fits a 1 8" diameter axle (axle not included). Note: The axle hole is only on the inside (doesn't go all the way through the wheel). 40mm diameter with a surface contact width of approx. 17. 5mm Each wheel weighs approx. 0. 21 ounce Designed for speed, looks, and performance. These plastic