15 pcs: Features: High quality industrial torque wrench with exact ranges. Power torque wrench. Easy to use, accurate and reliable. For installation of a bicycle torque wrench, best control length at 200mm Made of durable material,anti-corrosion and wear resistance. Portable,easy to use. Specifications: Name: torque wrench tool Material: nickel-chrome alloy steel Key Length: 215mm Torque: 2-14nm Square Head Size: 1/4 inch 15 piece set 2-14nm The detailed configuration is as follows: 2-14nm Torque Wrench 1 pc Socket Head: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm 7 pieces Flower Type Head: T10, T25, T30 3-Piece Ph1, ph2, ph3 cross 3 pieces One word head: 4mm How to use: 1.Preset torque: loosen the handle under the black lock nut, one hand grasp the wrench body,one hand turn the handle to the required torque, tighten the handle under the black lock nut, lock the torque value. 2.Install the appropriate sleeve, when use, should be slow and constant application of clamping force, hear the click sound, indicating that the torque has been adjusted to a preset value. 3.Small torque wrench, hear a small voice, a sliding sensation, it has been set to the torque value. 4.For the first time or long term unused, the use need to operate 5-6 times to make it smooth when not use adjust the lowest torque. 25 pcs: Features: High quality industrial torque wrench with exact ranges. Power torque wrench. Easy to use, accurate and reliable. For installation of a bicycle torque wrench, best control length at 200mm Specifications: Name: torque wrench tool Material: nickel-chrome alloy steel Key Length: 215mm Torque: 2-14nm Square Head Size: 1/4 inch 25 piece set 2-14nm The detailed configuration is as follows: 2-14nm Torque Wrench 1 pc Socket Head: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 5l 8 pieces Flower Type Head: T10, T15, T20, T25, T30, T40 6 pieces Ph1, ph2, ph3 cross 3 pieces 100mm Extension Rod 1 pc One word head: 4mm, 5mm 1/4 Lot Head Sleeve 3/8 adapter Sleeve Cylinder: 8mm, 10mm How to use: 1.Preset torque: loosen the handle under the black lock nut, one hand grasp the wrench body, One hand turn the handle to the required torque, tighten the handle under the black lock nut, lock the torque value. 2.Install the appropriate sleeve, when use, should be slow and constant application of clamping force, hear the click sound, indicating that the torque has been adjusted to a preset value. 3.Small torque wrench, hear a small voice, a sliding sensation, it has been set to the torque value. 4.For the first time or long term unused, the use need to operate 5-6 times to make it smooth when not use adjust the lowest torque. Package List: 15/25x Bicycle Torque Wrench Tool Kit