17mm Hex Hub
The HPI Havok wheels are the standard wheels on the Savage X GT-6 These brutally agressive wheels are molded from tough, high-impact nylon and feature wide 17mm hex hubs for extra durability.
These wheels are sold in pairs and are available in stealth black.
These whels fit 3.8in x 71mm monster truck tires:
#160355 - Tredz TerraHex Tire 160x90/3.8in (2pcs)