Contains 17 taps, 17 one-inch round dies, tap and reamer wrench, die stock, T-handle wrench, screw pitch gauge and screwdriver. Sizes include: NC style: 4-40, 6-32, 8-32, 10-24, 12-24, 1/4-20, 5/16-18, 3/8-16, 7/16-14, and 1/2-13. NF style: 10-32, 1/4-28, 5/16-24, 3/8-24, 7/16-20, and 1/2-20; NPT style: 1/8-27. Comes with fitted molded case.