Scorpion HKIII-5025 Shaft Kit XL (6mm 44mm)The Scorpion HK 5025 motors are built with 10mm hardened steel shafts that will last through countless hours of flying fun, but occasionally, on a "Less than Perfect" landing, you may bend or break one. For these occasions, we offer factory replacement shafts for all the HK 5025 series Scorpion Helicopter Motors. This extended shaft for the HK 5025 series motors measures 10mm in diameter, and is 105mm in long. The pinion end of this shaft is ground