Leopard lc-450 3500kv Outrunner MotorIncludes:(1) Leopard LC-450 3500kV Motor w/ 3.5mm Male Connectors Attached(3) 3.5mm Female Connectors Specs: Model: LC450 Rotational Speed: 3500Kv (RPM/V)Poles: 6 PoleNo-load Current (7.4V): 1.5A Lipo Cell: 3 - 5S Max. Permissible Current: 35A Running Current: <35A Resistance: 0.028 Dimensions (Diameter x Length): 28 x 33mm Length of Shaft: 17mm Shaft Diameter: 3.17mm Net Weight: 68g Power: 460W Mounting Holes: 19mm with m3 or 16mm with m2.5 screws. Suitable for Model: RC Model 450 Series Helicopter or boat in the 25" range