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1. Longitudinal groove and transverse groove design, high-frequency quenching and calcining, so that the jaws are harder, easier to catch the screw cap, the bite is very strong, easy to use and operate 2. Four diamond jaws, easy to bite the jaws and quadrangular three-point fixed design, so that the grip is more solid design 3. Three biting jaws, can be applied to various shapes and sizes of screwdrivers 4. Two sizes of jaws, applicable to different types of screws, very easy to use force 5. Easy-to-grasp handle shape for a comfortable grip 6. Note: the handle is not an insulator, please cut off the power before use 7. Scope of application: M2-M4, M1.6-M6 8. Size: about 15cm long
