Features: Pre-set values with sound and light alarm, preset values according to the torque to be measured, when the buzzer is switched on and the preset target torque value is reached, the buzzer will sound long and the red light will be on. When used in conjunction with a common ratchet, it becomes a digital torque indicator with the same function as a digital torque plate. (Handle to be purchased separately.) Widely used in the automotive, bicycle and machinery repairing industries. Carried adapter: TQA2-030: 1/2inch square hole to 1/4inch squarehead TQA2-135: 1/2inch square hole to 3/8inch squarehead TQA2-200: 1/2inch square hole to 1/4inch squarehead, 1/2inch square hole to 3/8inch squarehead TQA2-340: 1/2inch square hole to 1/4inch squarehead, 1/2inch square hole to 3/8inch squarehead Packing List (TQA2-030): 1 * Digital Torque Meter(Battery not included!) 1 * Screwdriver 1 * Joint Adapter OR Packing List (TQA2-135): 1 * Digital Torque Meter(Battery not included!) 1 * Screwdriver 1 * Joint Adapter OR Packing List (TQA2-200): 1 * Digital Torque Meter(Battery not included!) 1 * Screwdriver 2 * Joint Adapter OR Packing List (TQA2-340): 1 * Digital Torque Meter(Battery not included!) 1 * Screwdriver 2 * Joint Adapter Attention: The product uses 2 AAA batteries,Not include batteries!