This brushless motor with neodymium magnets and a rotating case is manufactured using the latest technology from the finest quality materials. The hardened steel shaft supported by three ball bearings, and overall robust yet lightweight construction, ensure a long service life. The optional radial mount set includes: mounting flange, propeller adaptor, securing collar, and screws. The unique design of this motor gives extremely high torque levels to turn large diameter and high pitch propellers with a high level of efficiency. New AXI 4120/20 GOLD LINE has been developed especially for use with 5s and 6s lipols for 3D models up to 3500g and for sailplanes up to 5000g in weight.Used AXI 4120/22 GOLD LINE Electric motor. *These motors are Basically the same as 4120/20 but have an extra coating to protect them from salt water.