Ergonomic handle provides a comfortable grip and is resistant to oil or solvents. Three modes of adjustable,loose,tight and fixed,easy to use.Suitable for all occasions. Press the,the screwdriver rod will to achieve the effect of tightening or loosening the screw,faster than other screwdrivers.These models are easier to wear on your wrist,allowing your wrist to rest. With 5 magnetic screwdriver heads,flat screwdriver & for 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.