Professional Calibration: Calibration quality and accuracy test methods according to ISO-6789-1:2021 and DIN EN-6789-1:2021-11. Each torque wrench is professionally and thoroughly tested for quality and accuracy. Ideal for threaded connections during assembly and maintenance, such as assembly, replacement and repair of motorcycle and bicycle accessories Precise torque values: torque range 5 to 25 Nm, 4%d measurement error. When the preset torque value is reached, you will hear and feel a slight "click" sound (so it is recommended to keep the environment quiet when using a small torque value), reminding you to "stop" force, to ensure that the screw is tightened Torque wrench set: includes 1 /4" Non-Slip Handle + Extension Rod + 7 Hex Bits: H2, H3, H4, H5, H6, H8, H10 + 5 TX Bits: T10, T15, T20, T25, T30 Everything in the box is made from small Arranged in order from large to large, so you can easily select the size you need.Ratchet Tool: The non-slip handle has a precisely adjustable torque range, allowing you to set the desired torque value safely and quickly.Using the switch lever, you can easily Switch the ratchet head from left to right.High quality material: with torque wrench ratchet and all em tips are made of high quality chrome vanadium steel, the handle is made of high carbon steel, no rust, no corrosion, long service life. The knurled design prevents slipping and provides a comfortable grip. If you have any questions about using your torque wrench, please watch the product guide video and product description text, or contact us.