WRENCH SET: Perfect for creating straight and accurate thread holes in your workpieces. This screw extractor works with small hand reamers, drill bits, and other hand-turned tools. Includes 164 for No. 0 to 1/4" taps and 166 for No. 12 to 1/2" taps. SLIDING T-HANDLE: Ideal for mechanics, machinists, and maintenance professionals. Our practical hand wrench provides a sizeable gripping surface while allowing maximum maneuverability, stability, and leverage in tight and hard-to-reach spaces. REFERENCE TABLE: Great for commercial and automotive work. It includes a plastic tap guide featuring a machine screw drill chart for recommended 75% depth thread on the front and a decimal equivalents table in 64ths from 1/64" to 63/64" on the back. REPLACEABLE JAWS: Fabricated from high-strength alloy steel, this tapping wrench features a self-centering hardened jaw and knurled chuck sleeve providing a positive grip. The jaws are replaceable for #JAWS