This are a pair of optional AKA Black SC Cyclone Wheels for the Traxxas Slash 2wd, Slash 4wd, Ofna SCRT10 and Ultima SC. FEATURES: Fits rear of 2WD Slash front and rear of Slash 4x4 front and rear of Ofna SCRT10 and front and rear of HPI Blitz Lightweight one piece design with simulated bead-loc ring Same track width as stock wheel High strength INCLUDES: Two AKA Cyclone Black Wheels REQUIRES: Dual profile tires and foam inserts SPECS: Outer Diameter: 2.2" (56mm) Inner Diameter: 3.0" (76mm) Width: 1.6" (41.5mm) Hex size: 0.47" (12mm)