Features1. [High hardness material] Made of chromium-vanadium alloy steel, strong and durable. It is small and portable and can be placed in your toolbox. 2. [Push-pull ratchet screwdriver]: Press the handle, the screwdriver rod will automatically rotate, achieving the effect of tightening or loosening the screw, faster than other screwdrivers. 3. [Easy disassembly and assembly]: Simple self-locking type, pull back the lock shell to open the lock, insert the bit to easily lock the bit. 4. [Semi-automatic screwdriver]: These spiral ratchet models are easier to wear on your wrist, allowing your wrist to rest. 5. [Adjustment switch and comfortable handle] Comfortable grip, convenient and practical, 3 adjustment modes of loose, tight and fixed, easy to use. Suitable for all occasions.SpecificationMaterial: Alloy Steel, PPHeat treatment: HRC45-50System: MetricHandle color: Red, YellowWeight: 144g (red), 124g (brown)Length: 29*217mm (wood handle), 34*220mm (plastic handle)Package List1*Push-pull Ratchet Screwdriver 5*Replaceable Heads