Bosch Brand :
GDS18V-EC250 : Max. Torque 250 Nm, Tool holder 1/2″ external square and 1/4″ internal square, Bolt size M6-M16, Battery 18Vlt, Brush-less motor
GDS18V-EC250 : Max. Torque 250 Nm, Tool holder 1/2″ external square, Bolt size M10-M18, Battery 18Vlt, Brush-less motor, Weight 1.85kg
GDS18VLI HT : Max. Torque 650 Nm, Tool holder 1/2″ external square, Bolt size M12-M20, Battery 18Vlt, Weight 3.05kg

Dewalt Brand :
DCF830M2 : 14.4V, 1/2″ drive, Lithium Ion Battery
DCF889M2 : 16V, 1/2″ drive, Lithium Ion Battery

Chinese Brand :
12V : 3/8″ drive, Max. torque 85Ft.-lbs,2200rpm
18V : 1/2″ drive, Max. torque 280Nm,2200rpm, Reversible
36V : 1/2″ drive, Max. torque 80Nm,0-400/1400rpm