- This wheel and cartridge set comes with everything you need to build a CO2 dragster, except a wooden blank
- Includes two 40mm Rear Wheels, two 35mm Front Wheels, two 1/8" Axles, two 3.9" Straws, two Screw Eyes, and four Washers
- Rear wheel surface contact width: approx. 17.5mm
- Front wheel surface contact width: approx. 5mm