M1R-ZK3-8 　 Rated Voltage 　230/120V 　Frequency 　50/60Hz 　Rated Input Power 　1000W/1050W 　Wheel Size 　6/6.35/8mm 　No Load Speed 　9000-30000r/min 　Case Qty 　4pcs 　G.W/N.W 　19/18Kgs 　Packing Size 　43.4x36.6x29.7cm 　PCS/Container(20) 　2552pcs We are Zhejiang Jinyi Electric Tools Co.,Ltd. in china.We supply electric tools,water pump,grinding wheel and air tools with good quality and low price. Please contact us to know details.