Factory Pre-Set models are set at the factory to the customer's specified torque setting and are furnished with a Certificate of Calibration. Please specify desired torque setting when order is placed. 4 models available. Trilobular comfort grip. Universal 1/4" hex bit holder with strong rare earth magnet. Cam-over torque limiting clutch. 3.5 inch display with 64x48 pixels. Lightweight handheld design making it very flexible and convenient to use