TAPCO has manufactured Special or Standard Taps & Dies for over 40 years. We offer more than 100,000 different taps in stock. They include: Acme, Acme Sets,Tandem Acmes, 2G, 3G Acme, Carbide, Cobalt, Trapezoidal, British Whitworth, Pulley, STI, Pipe, NPT, NPS, NPSI, NPSM, NPSL, NPSF, NPTF, Form, Extension, and Metric. We have extensive sizes. In addition, we offer special taps manufactured to your P.D.s. in both right and left hand taps, along with Combination Drill & taps. In most cases, Same Day shipment or 24 Hour delivery for special taps. Manufacturer of special & standard taps & dies including acme taps, acme tap sets, tandem acmes, 2G, 3G, 4G, 2C, acme taps, carbide taps, cobalt, trapezoidal, British Whitworth taps & dies , pulley, right & left hand taps, STI taps, pipe taps, NPT