<p>Efficere Tools 45-Piece Premium Tap and Die Set in Large Standard Inch Size is your best choice for hand threading jobs at home, garage, shop, and work sites. It is perfect for a wide range of applications, such as auto repairs, metal fabrication, forming, machinery, plumbing and a lot more. It can be used to both cut new threads and chase / renew existing threads.<br /> <br /> This thread maker kit is manufactured with highly durable GCr15 bearing steel, and cuts through a wide range of metal pipes and rods, including mild and carbon steel, cast iron, sheet metal, stainless steel, aluminum, brass, copper, block, frame, and much more. The hole chasing result from this super threader / chaser is guaranteed to perfectly accommodate bolts, nuts, and screws.<br /> <br /> All the cutter teeth are professionally CNC machined and heat treated to Rockwell hardness 60 HRC to provide aggressive, clean and precise threading results. It also features with a tapered design, allowing an easier start and preventing over threading.<br /> <br /> <br /> Set Includes: <br /> <br /> (20) Taps (for inside threading) <br /> (20) Dies (for outside threading) <br /> (2) Tap Wrench<br /> (2) Die Wrench and Adapter<br /> (1) Screwdriver<br /> (1) Storage Case<br /> <br /> <br /> Tap and Die Sizes: <br /> <br /> (10) Taps for Coarse Threads (UNC): 1/4” - 20 NC, 5/16” - 18 NC, 3/8” - 16 NC, 7/16” - 14 NC, 1/2” - 13 NC, 5/8” - 11 NC, 3/4” - 10 NC, 7/8” - 9 NC, 1” - 8 NC<br /> <br /> (10) Dies for Coarse Threads (UNC): 1/4 x 20 NC, 5/16 x 18 NC, 3/8 x 16 NC, 7/16 x 14 NC, 1/2 x 13 NC, 5/8 x 11 NC, 3/4 x 10 NC, 7/8 x 9 NC, 1 x 8 NC<br /> <br /> (10) Taps for Fine Threads (UNF): 1/4” - 28 NF, 5/16” - 24 NF, 3/8” - 24 NF, 7/16” - 20 NF, 1/2” - 20 NF, 9/16” - 18 NF, 5/8” - 18 NF, 3/4” - 16 NF, 7/8” - 14 NF, 1” - 14 NF<br /> <br /> (10) Dies for Fine Threads (UNF): 1/4 x 28 NF, 5/16 x 24 NF, 3/8 x 24 NF, 7/16 x 20 NF, 1/2 x 20 NF, 9/16 x 18 NF, 5/8 x 18 NF, 3/4 x 16 NF, 7/8 x 14 NF, 1 x 14 NF</p>