Product Description 40pc TUNGSTEN TAP & DIE SET SAE Heavy duty heat treated alloy steel construction and rust-resistant satin finish. Precision machined to exacting standards. Rockwell hardness of 58-61 HRC. Features & Specs Comes packed in a steel case for storage Consists of national coarse, national fine & pipe combination thread. Contains one Tap & Die in the following sizes - 4-40, 6-32, 8-32, 10-32, 10-24, 12-24, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-14, 7/16-20, 1/2-13, 1/2-20,1/8 NPT-27 Includes long handle adjustable tap wrench, Die handle, T type handle tap wrench, Flat screwdriver & screw pitch gauge. Comes in black metal case.