Description: Specification: Efficiency:IE 2 Output Power:45W Commutation:Brushless Voltage(V): DC 220V Frequency:50Hz Power factor:0.85 Connection mode:Y type Class of insulation:B Mass:280g Phase resistance:400? Specification: Material: Alloy Size Chart: Approx. 17x17x33mm/0.67''x 0.67''x 1.3'' Package Includes: 1 Piece DC Rotor