Standard Pack = 1 piece(s). Plain Tap WrenchesFor holding Taps, drills, Reamers and Small tools tobe turned by hand. Body is centered for use on lathe centers or drilling machines to start Tap straight. Jaws heat treated to withstand Hard use. All Wrenches have sliding handle. D, E, and F Sizes are identical to A, B, and C except bodies are Longer permitting work at depths which cannot be reached with shorter Wrenches.