Useful for holding taps, drills, reamers & other small tools to be turned by h&. jaws are hardened & frictionally held handles can be removed or positioned so that leverage can be applied when working in close proximity. Tap size capacity: 6.4-12.7mm (1/4-1/2 inch)
square shank capacity: 4.7-8mm (3/16-5/16 inch)
body length: 90mm (3 1/2 inch).