HPI Wheely King / Crawler King Differential Final Gear Set HPIA855. Condition is New. Also fits HPI Nitro3 EVO, Nitro RS4 3, NITRO RS4 MT2, Super Nitro Rally, and other models shown in photo #2. Shipped with USPS First Class Package. Please check our other listings, we will be adding quality new unused RC items daily. Please feel free to follow us as a seller, appreciated