The Kauplus 1/2-inch drive click torque wrench set, reversible 24-tooth ratchet head drives in both directions and measures torque in clockwise direction makes working easier and faster. Simple to use the torque wrench emits a click that can be heard and felt when the pre-set value is reached. “Click” sound lets you know your target torque has been reached and stop applying force for avoiding over loading. Meets DIN EN ISO 6789 torque standards, pre-calibrated to +/- 4% accuracy and ready to use. Increment 1 ft.-lb. (1.36 Nm). Durable alloy-steel construction with no-slip hand grip for comfort and quick adjustment. Locking feature offers stability accurate way to tighten fasteners in automotive/ industrial maintenance applications. Set contains: each of 17mm, 19mm, 21mm socket, 1/2" x 5" extension bar, Reducer 1/2" to 3/8", come with a blow case, Made in Taiwan, to read and understand the operating instruction and all safety information before use. Be sure to have the right tool for the job application when doing automotive maintenance and correctly tightening fasteners to a vehicle or equipment.