These are a set of Traxxas 2.8" Mounted All Star Wheels and Tires. FEATURES: 2.8" All Star chrome wheels Ribbed pattern. INCLUDES: Two 2.8" mounted tires, All Star chrome wheels and inserts. REQUIRES: Installation on vehicle. SPECS: Outside diameter: 4" (101mm) Width:2" (50.8mm) Inside diameter: 2.8" (71mm) Hex Size: 12mm COMMENTS: All Star Wheels available separately, TRAC3772.