Paramount Pre-Set Torque Limited Screwdriver Handle: 22.1 in/lbs (2.5 Nm). When the preset torque level is reached, the mechanism slips and makes an audible click. Use to protect fasteners from overtorquing to reduce wear and stripping. Repeatability of +/- 10%. Insert your choice of screwdriver blade by snapping it into the handle. Comfort grip handle features a durable thermoplastic core wrapped in cushioned rubber for increased comfort and control .