Features: Adjustable torque tool with 1/4" drive and features a click mechanism to indicate when the torque setting is reached. When adjusting the torque at a higher torque, when the work reaches the set torque, you can hear the “click alarm” clearly. Once you hear "click", stop pulling the key, if not, the key will be broken. Supplied in a black box Adjustable in small increments Individually calibrated by computer. Possibility to re-calibrate also 15pcs Industrial grade 1/4 2-15Nm torque wrench Hex socket head: 2, 2.5, 3, 4, 5, 6, 8mm; Hexagonal flower head: T10, T25, T30; cross PH1, PH2; word 4mm; 1/4 100mm extension pole Weight: 900g Size: 28x10x4cm 17pcs Industrial grade 1/4 1-25Nm torque wrench Hex socket head: 2, 2.5, 3, 4, 5, 6, 8mm; Hexagonal flower head: T10, T25, T30; cross PH1, PH2, PH3; word 4mm; 5MML Longer Hexagon Socket; 100mm longest pole. Weight: 1 kg Size: 28x10x4cm 18pcs Industrial grade 1/4 1-25Nm torque wrench Hex socket head: 2, 2.5, 3, 4, 5, 6, 8mm; Hexagonal flower head: T10, T25, T30; cross PH1, PH2, PH3; word 4mm; 5MML with a longer internal hexagon; 100mm with longer extension; 1/4 to 3/8. Weight: 1.1 kg Size: 28x10x4cm Package include: 15/17/18 piece torque wrench set