The mach series 11-piece bit driver set provides 50% more torque, using the break-away handle feature, than a regular screwdriver with a 90-degree twist action. Offset shaft and smooth spin handle allows for a rapid crank action.Retractable screw guide sleeve on tip keeps flat tips and stubborn fasteners engaged. Full metal break-over joint built into the multi position handle provides added strength for high torque when used in the t-handle position.,The mach series 11-piece bit driver set provides 50% more torque, using the break-away handle