Voltage:7.2V/9.6V/12V/14.4V/18V Chuch Diameter:10mm Torque Stage:6/16 No load speed:0-550rpm/550rpm Charging time:3-5hours/1hour Packing Size&Pieces:53.5?36.5?38cm/5pcs Weight/Carton:27/26KGS Quantity:20??container:2000pcs;40?container:3860pcs