WITH 2 JAWS OF HARDENED AND TEMPERED STEEL
ALL CHROME PLATED FINISH OR BLACK FINISH
FOR" HEAVY DUTY OPERATION
Designed for use with taps, reamers, screw extractors, and other tools with a square shank.
Adjusted and tightened to size by twisting knurled nut.
Holds Tap Sizes 3/16"-3/8" or M5-M10