Standard 2.2"/3.0" wheel size CNC machined aluminum main wheel and front ring CNC machined black delrin inner ring Internal beadlock system Scale lightweight design Standard 12mm hex mount Fit standard width rear drag racing 2.2"/3.0" tires Matching front wheels are available (SSD00470) Specifications: Wheel width: 44mm Tire bead width: 39.5mm Offset: 1.9mm Backspacing: 23.6mm Weight: 89g (with hardware)