This is the Jumbo Kong Tire and Wheel Set from IMEX. FEATURES: Directly fits the HPI Savage, Traxxas E/T-Maxx, Tamiya Terra Crusher, and the Associated BFT Vehicles Sayville Chrome Wheels INCLUDES: Four Jumbo Kong Tires Four Sayville Wheels Four Foam Inserts REQUIRES: Mounting tires to wheels following included instructions, tire glue not required SPECS: Tires: Wheels: Outer Diameter: 8" (203mm) Outer Diameter: 3 1/2" (89mm) Inner Diameter: 2.9" (73mm) Width: 4" (100mm) Width: 4 1/2" (114mm) Hex: 14mm