Aluminum Mag Wheel - 12.5" - High Strength - Fits All Models Of: Capn Billys Wiz Bang. Currie Wheels, GT Wheels, Mongoose Wheels, Schwinn Wheels, and Tiger Wheels - Rear Mag is Threaded For a Screw in Style Sprocket - Includes Axles, Bearings, Nuts, etc. * do not work with airless tires