this is the best and one of the most complete tap and die sets on the market today. includes 2 die handles, 2 standard tap handles, 2 tee tap handles, screwdriver and pitch gauge. all taps are taper grounds and all dies are adjustable. sizes include four 4-40 taps and four dies, six 6-32 taps and three dies, two 8-32 2 taps and two dies and one each: 10-24, 10-32, 12-24, 12-28, 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, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, 3/4"-10, 3/4"-16, 7/8"-9, 7/8"-14, 1"-8 and 1"-12 taps and dies. case included. 