Taps & Die Sizes Included. Fractional Sizes - 45 PC. SET - 1/4” TO 1”. Includes Coarse & Fine Threads. Consisting of the following sizes: 1 each Tap and 1 each Round Die 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, 1"-14. Outside diameter of round dies: 1/4" to 3/8" - 1” O.D. 7/16" to 5/8" - 1-1/2” O.D. 3/4" to 1" - 2” O.D. Also Includes: 2 Tap Wrenches: (1/4”-1/2” “T” Type, 1/4”-1” Large Screw Type), 1 2” Diameter Die Stock, 1 1-1/2” Adapter, 1 Screwdriver.