Product Detail FLUX WARP 5700kv BRUSHLESS MOTOR FEATURES: High Torque/ High Temperature Neodymium Magnet. Oversized precision sealed bearings 2.3mm 1/8" Hardened Steel Shaft. Slotless stator design delivers smooth, linear torque. . The "E-Firestorm 10T Flux RTR" is best product for you. We recommended E-Firestorm 10T Flux RTR