Three modes of adjustable, loose, tight and fixed, easy to use. Suitable for all occasions ergonomic handle provides a comfortable grip and is resistant to oil or solvents With 5 screwdriver heads, flat screwdriver & for cross screwdriver Easily solve the problems of small space, screw position, and screw inaccessibility. One-handed pressing can be used in locations where other screwdrivers cannot be used Press the ratchet switch , the screwdriver rod will rotate to achieve the effect of tightening or loosening the screw, faster than other screwdrivers. These ratchet models are easier to wear on your wrist, allowing your wrist to rest, Manufacturer: XIAOQENAN