Fix It Sticks' Torque Limiters prevent over-tightening of fasteners. When you reach the correct in-lb of torque, you'll hear an audible "click" and the limiter will spin to prevent further torque from being applied. Each limiter accepts any standard 1/4" bit, fits into any standard 1/4" driver, including Fix It Sticks Tools or our T-Way Wrench, and tightens precisely (+/- 6% accuracy). Each retains its accuracy for up to 20,000 cycles.