Professional grade fractional taps and dies with precision threads accurately formed for consistent and exact threading. Each tap and die are heat treated and tempered for file hard threads and a longer useful life. For hand threading applications only. Includes: (11) plug taps and (11) hex dies, one each in the following sizes: 1/4-20 NC, 1/4-28 NF, 5/16-18 NC, 5/16-24 NF, 3/8-16 NC, 3/8-24 NF, 7/16-14 NC, 7/16-20 NF, 1/2-13 NC, 1/2-20 NF and 1/8-27 NPT, plus adjustable tap wrench and 1 In. die stock.