The Scorpion HK-Series 22mm brushless motors are designed to provide reliable power for your smaller RC aircraft and helicopter. These motors features replaceable 3.175mm prop shafts with dual ball bearings. All Scorpion HK-Series motors come with 3.5mm bullet style connectors already installed, and include a complete hardware package containing 3 matching female bullet connectors for your Speed Controller, a cross style back plate mount with screws, all in an attractive metal can package. All of the Scorpion HK-Series 22mm motors are built with a 9 tooth stator assembly, with 6 magnets in the rotor housing.