This is the Great Planes ElectriFly RimFire .46 42-60-800 Brushless Outrunner Electric Motor. FEATURES: For Sport airplanes up to 7.5lbs (3400g) and 3D airplanes up to 5lbs (2210g) Designed for explosive acceleration and maximum torque eliminating the need for a gearbox Lightened aluminum can houses high torque rare earth Neodymium magnets Double shielded bearings Virtually maintenance-free; no commutators or brushes to wear out Two year quality guarantee INCLUDES: Great Planes ElectriFly RimFire .46 42-60-800 Brushless Outrunner Electric Motor Outrunner Motor Mount GPMG1205 Outrunner Prop Adapter GPMQ4906 REQUIRES: Brushless Motor-compatible 60A Electronic Speed Control Propeller: Depending on aircraft application SPECS: Motor Diameter: 1.65" (42mm) Motor Length: 2.36" (60mm) Shaft Diameter: .20" (5mm) Shaft Length: .67" (17mm) Lead Length: 3" (76mm) Connectors: Bullet type, 4.0mm diameter Max. Constant Current: 60A Max. Surge Current: 100A Max. Constant Watts: 1110W Burst Watts: 1850W No Load Current: 4.6A Input Voltage: 18.5-22.2V (5-6S LiPo) RPM/V (kV Rating): 800 Weight: 9.5oz (268g) Suggested Propeller Size: 10 x 5E-11 x 5E COMMENTS: The three-number designation refers to Motor Diameter, Motor Length and kV Rating. jxs 4/20/06 ir/jxs