Easy to use reversible ratchet, clockwise counterclockwise two way adjustment. 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. 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. 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. 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., Manufacturer: QAXRZCUCD