This 67mm diameter outer rotor gimbal brushless motor features a K value of 210 and requires a brushless drive for operation. It has a 27.5mm through-hole central shaft and an internal stator coil diameter of 60.8mm with a stack thickness of 3.3mm. The three-phase coil phase resistance is approximately 6 ohms. Crafted from CNC-machined aluminum alloy, it showcases exquisite workmanship., Weight: 0.23920155427 Pounds, Manufacturer: Oewwthy