Chrome-vanadium Steel (Carbon Steel, Aluminum Alloy are available)
1.Suitable for a screwdriver handle or electric screwdriver tool (hexagonal hole or three-jaw chuck) drive sleeve to use.
2.The 1/4" hex shank fit all quick change chuck as well as standard drill chucks
3.Made of chrome-vanadium Steel,higher strength and deformation resistance.4.Spring loaded ball bearing on head holds sockets securely.5.Can change your hand socket set into a driven socket set.
* Other specifications and sizes are available upon request
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