High-quality dBoots Back-Flip LP tires, mounted on ARRMA wheels, are direct replacements for your kit items. Features a multi-surface tread pattern for awesome RC traction in all conditions. Multi-spoke wheel design in super-tough Nylon for durability and 17mm hex for strength. Wheel bead Diameter: 3.8 inches (97mm) | Overall diameter: 6.1 inches (154mm) | Width: 3.03 inches (77mm) | Hex: 17mm.