Description: High quality Waterproof 3660 3250KV 4 Poles Brushless Motor 4 Pole 12 slot hi-torque motor design,CNC machined 6061 T6 billet aluminum heatsink can High purity copper windings maximizes efficiency,High RPM ABEC5 oversized bearings Precision balanced rotor, smoothness for best reliability and maximum RPM,Precision engineered for maximum energy conversion Suit for 800-900mm (or above) RC boat. Specification: Item No.: 3660 KV(RPM/Volt): 3250KV RPM: 60000 Watt: 1200W No load current: 3.1A Max voltage: 17V Diameter: 36mm Length: 60mm Shaft diameter: 5mm Connector: 4mm golden banana connector Stator-super thin (0.2mm) laminations,Removable/replaceable rotor Material:Metal Color?Black Package Includes: 1 piece Waterproof 3660 3250KV Brushless Motor