superss hobby 3680 1800KV Motor with RM7258 Water Cooling Jack Combo for 100cm RC Boat

Features: 4 poles, 12 slots, and high torque. CNC machined 6061 T6 aluminium cooling fin s to efficient heat dissipation. Secondary oxidation treatment makes it exquisite and durable. High purity copper windings maximizes efficiency, with high temperature resistance. High speed ABEC5 bearing is precision and stably, with low friction, good durability. 4mm gold plated connector, 5mm shaft, install it with M3 screw. Balanced and smooth rotor can get best reliability and maximum RPM. Also, rotor is removable and replaceable. Ultra thin silicon lamination behaves high magnetic permeability, good insulation and heat resistance Motor is waterproof and compatible with RC boat whose length is about 100cm, weight is 4 6 kilograms. Specification: Material: Metal Color: Shown As Pictures Weight: 420g Type: RC Model Part & Acces Package List: 1 * Motor