Also suitable for hand reamers. Tap wrench with hardened jaws is aligned in a slip fit guide which automatically squares the tap or reamer with the work piece.
Two sets of jaws cover a range of hand taps from #0 through 1/2". "V" on base of the guide for round parts.
Stem of tap wrench is center drilled for floating center. Complete with tap wrench, guide and two sets of jaws.