1The high purity copper windings can maximize efficiency, it is also equipped with high speed ABEC5 super large bearing. 24-pole 12-slot high torque motor design with CNC machined 6061 T6 aluminum heat sink shell. 3For universal mounting, it is suitable for all 1/10 automotive brushless multi-installation systems that use M3 screws. 4Precision balanced rotor with smoothness can keep better reliability and maximum RPM. 5With ultra-thin stator (0.2 mm) laminate, it is also with a movable/replaceable rotor. And precision engineering design can finish maximum power conversion.Item Type: Motor Material: Metal + plastic Color: Black KV (RPM / volt): 4370KV Wattage: 800 watts Maximum Voltage: 12V Maximum Amperage: 66A Number of Rotor Poles: 4 IO: 2.7A Resistance: 0.0185 Maximum Speed: 50000 RPM Axis: 3.175 Connector: Approx. 3.5 mm / 0.14 in gold colorSpindle Extension Length: Approx. 15mm / 0. 6 inSize: Diameter Approx. 36 x 50mm / 1.4 x 2.0 in Weight: Approx. 180 g / 6.3 ozborder: 1px solid000important;}1 x Motor1 x Instruction Manual