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 (5x0.8, 5x0.9, 6x10, 6x0.75, 8x1.0, 8x1.25, 10x1.5, 10x1.25, 12x1.75, 12x1.5, 1/8xNPT27)