1.Drill Chuck Keys is the use of leverage wrenching bolts, screws, nuts and other threaded fasteners hand tools. Wrench usually made one or both ends of the handle opening or aperture sets of clamping bolts or nuts. When applied to the use of the direction of rotation along the threaded shank force can wrenching bolts or nuts.
2.proove cleanness,precsion more stable ,surface more smooth,feel more comfortable and appearance nicer. Chuck surface is coated ,the layer is evenly ,Chemical plating solution dispersion degree of almost 100%,nickel layer is thin .This special coating can reduce Spindle abnormal wear and tear.Don't influence precision .
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