• Cut Clean, Precise Threads In Metal • Industrial Performance Set - UNC / UNF Sizes • High Speed Steel Plug Taps, Hex Dies • Ratcheting Style Wrench - Better Torque Control, Forward / Reverse Operations • Quick-Change Tap Holder, Quick-Change Die Holder For Fast Tool Swap-Out and Productive Threading • Use Taps To Cut Internal Threads • Use Dies To Cut External Threads • Engineered For Professional Use - Construction, Metalworking, MRO, Automotive, Mechanical • Includes 17 Taps, 17 Dies, Wrench, Tap Holder, Hex Die Holder, T-Handle Bar, Thread Pitch Gauge, Screwdriver, Hex Key