Manufactured from Alloy Steel with HRC 58-62. Contents include 1 Die Handle 1" capacity, 1 Adjustable Tap Wrench 1/16 - 1/2" capacity, 11 die sizes (5x0.8, 5x0.9, 6x10, 6x0.75, 8x1.0, 8x1.25, 10x1.5, 10x1.25, 12x1.75, 12x1.5, 1/8xNPT27) and 11 tap sizes (1/4-20NC, 1/4-23NF, 5/16-18NC, 7/16-20NF, 3/8-16NC, 5/16-24NF, 7/16-14NC, 1/2-13NC, 3/8-24NF, 1/2-20NF, 1/8-27NPT) and 11 tap sizes (1/4-20NC, 1/4-23NF, 5/16-18NC, 7/16-20NF, 3/8-16NC, 5/16-24NF, 7/16-14NC, 1/2-13NC, 3/8-24NF, 1/2-20NF, 1/8-27NPT)