Features: Accurate torque value 3% error accuracy, each torque wrench undergoes 10000 machine up and down pressuretests, and each torque wrench is calibratedby a professional machine, with highaccuracy and longer service life Good quality materials - ratchet made of highhardness 40CRV alloy (chromevanadium steel), non-slip, rust-proof, highaccuracy, easy to read. The fittings are made of S2tool steel with good impact resistance, hardness and toughness. Easy to use - reversible ratchet, clockwise counterclockwise two-way adjustment. Torque wrench is equipped withaquick release button that can easily install and remove the socket. Adjustment of the torque value: press to lock, set torque value, release, automatic locking of the torque value. Safe and reliable - When thepreset torque value is reached, the torque wrench makes a clicksound. Widely used - ratchet box widerapplication on bicycles/mountain bikes/motorcycle maintenance for use on stems, seatclamps, lever clamps, rotors, chain sets and cranks etc. Also suitable for repair/installation of household appliances, electrical engineering, product assembly, mechanical repair, daily life, etc. Specifications: Product Model: 21Piece1/4 (2-24Nm) Torque Wrench Set Material: Stainless Steel Adjustablerange：2-24Nm Extension Rod 100mm Hexagon joint 2, 2.5, 3, 4, 5, 6, 8, 10, Extended Hexagon H5 Universal Joint 1/4, 1/4 to 3/8 Adapter, Cross Head: PH1, PH2 PH3 Torx: T10, T15, T20, T25, T30 Package Includes: 1 Set Torque Wrench note: Due to the problems of lighting effects and shootingangles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.