Feature:1.4Poles design、 high torque & high efficiency. The overall efficiency exceed 90 percent.2.Low heat production、 long lifetime、 strong overload protection and it can function 95% of its features without any heat sink appliance.3.high quality materials adopted: high intense aluminum alloy anodizing shell 、 front & back cover 、 high-performance temperature-resistant magnetic steel and imported high-speed bearingSpecifications:Model: 3660Dimension: R36 * 60mmKV(RPM/V): 2600KVPoles: 4Watts: 1200WMax voltage: <19VMax Amps: 63AShaft diameter: 5mmConnector: 4.0mm gold plugRecommend model: 1/8 1/10 RC Car、BoatPackage size: 9.5 * 8 * 6.3cm / 3.7 * 3.1 * 2.5inPackage weight: 251g / 8.8ozPackage list:1 * 3660 4Poles 2600KV BL Brushless Motor