3660 KV1620 Brushless Motor Water Thrust Jet Pump 29mm CNC Props for RC Jet Boat Description Jet Pump: It features a high efficiency CNC 4-Blades propeller, this propeller is made of 7075 aluminum alloy, high-precision, smooth surface. The jet pump shell is made of high quality Nylon, it is light but it has good mechanical strength and decay-resistant. Concentrated power boosting through pipe diameter difference, Make the jet-type power stronger. Suitable for installation of hull length 40cm - 75cm 4-poles 3660 KV1620 brushless motor: Comes with water cooling jacket. High torque 4-poles brushless motor,made of high-performance,high-temperature copper cable and NSK bearings. ? Specification & Features Jet Pump: - Propeller: diameter 29mm, CNC 7050 aluminum - SizeLength 180mm, width 45mm, height 55mm - Suitable for installing 36/40 series brushless motor - Motor mount: mounting hole distance 19-25mm, aluninum alloy - Servo mount: Glasse fiber, suitabel for 3Kg servo, such as CYS S0270 - Inlet barrier: stainless steel - Transmission shaft4mmstainless steel - Cooling nozzle: 5mm - Lubrication nozzle: outer diameter 5mm - Elastic coupling for motor: 5mm stainless steel - Suitable for installation of hull length 40cm - 75cm 4-poles 3660 KV1620 brushless motor: - Max current: 57A - Max voltage: 30V - Max Power: 1700W - No-load current: 1.1A - Max RPM: 60K - Shaft diameter: 5mm - Size: 36mm*60mm(D*L) - Weight: 273g (with water cooling jacket) ? Item Contains 1 piece of Water Thruster Jet Pump Sprayer With 29mm 4 Blades CNC Alloy Propeller 1 piece of 4-poles 3660 KV1620 brushless motor