Leopard lc-500 1450kv Outrunner MotorIncludes:(1) Leopard lc-500 1450Kv Motor w/ 4mm Male Connectors Attached(3) 4mm Female Connectors Specs: Model: LC500 Rotational Speed: 1450Kv (RPM/V) No-load Current (7.4V): 2.6A Lipo Cell: 3 - 6S Max. Permissible Current: 40A Running Current: <36A Resistance: 0.0282 Dimensions (Diameter x Length): 37 x 47mm Length of Shaft: 19mm Shaft Diameter: 5mm Net Weight: 175g Power: 1400W Suitable for Model: RC Model 500 Series Helicopter or boat in the 25" range