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.