Klutch Tungsten Tap & Die Set - 45-Pc., SAE Heat-treated, rust-resistant tungsten steel Rockwell hardness of 58-61 HRC Satin finish Set includes die handle wrench, die adapter, adjustable tap handle wrench, stubby screwdriver, T-handle tap wrench, 20 adjustable dies and 20 plug taps SAE sizes: 1/4in.-20, 1/4in.-28, 5/16in.-18, 5/16in.-24, 3/8in.-16, 3/8in.-24, 7/16in.-14, 7/16in.-20, 1/2in.-13, 1/2in.-20, 9/16in.-12, 9/16in.-18, 5/8in.-11, 5/8in.-18, 3/4in.-10, 3/4in.-16, 7/8in.-9, 7/8in.-14, 1in.-8, 1in.-14