This is a pair of 3.8" Pro-Line Monster Truck M2 Trencher Tires Mounted on 40 Series Tech 5 Black Wheels. FEATURES: Fits the Traxxas T-Maxx 3.3, E-Maxx, Revo, Revo 3.3, Revo Platinum, E-Revo Brushless, HPI Savage XL, Savage Flux, Savage 4.6, Savage X SSand the Losi XXL using a 17mm hex Horizontal H-shaped tread nearly 1/4" (6.5mm) high for huge amounts of forward bite with high degree of longevity and durability Increased sidewall thickness to resist tearing at the bead M2 medium compound Five-spoke nylon wheels, black in color INCLUDES: Two 3.8" M2 Trencher Tires and two 40 Series Tech 5 Black Wheels REQUIRES: Mounting to vehicle SPECS: Tires- Diameter: 6.89" (175mm) Width: 3.43" (87mm) Wheels- Mounting Dia.: 3.82" (97mm) Width: 2.75" (70mm) Hex Size: 17mm Offset: -0.76" (19mm) Backspacing: 2.14" (54mm) jxs 09/21/10 ir/jxs