Item Type: Brushless Motor Shell Material: Aluminum Alloy Colour: Black Motor Height: Approx. 33.5mm/1.3in (including base) Motor Diameter: Approx. 40.5mm/1.6in Shaft Length: Approx. 13.6mm / 0.5in Shaft Diameter: Approx. 4mm/0.2in KV Value: 350KV Maximum Power: 375w Use Voltage: 7.4V to 24V (2 to 6S) Maximum Speed: 8400 (24V) Suitable for: RC Model BoatPackage List 1 x Brushless Motor1CNC Machined: The brushless motor has CNC machined 6061 T6 aluminum front and rear covers, which ensure stable performance 2Aluminum Alloy: The brushless motor is made of aluminum alloy, which is wear resistant and durable, and has a long service life 3High Temperature Resistance: The outrunner brushless motor uses high purity high temperature resistant copper coils to effectively provide high efficiency 4Waterproof and Dustproof: The RC boat accessories have waterproof and dustproof components, strong resistive current capability and good heat dissipation 5Scope of Application: The waterproof brushless motor is suitable for remote control model boats, underwater thrusters, etc