WESTWARD 1PZ37 Tap/Die Set Number of Pieces 64 Thread NC NF NPT Size/Range #4-40 to 1 Inch Tap/Round Die Size #1-8 1-14 4-40 6-32 8-32 10-24 10-32 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 9/16-12 9/16-18 5/8-11 5/8-18 3/4-10 3/4-16 7/8-9 7/8-14 1/8-27 1/4-18 Inch NPT Type 1 1 1/2 and 2 Inches Outer Diameter Solid 1 1 1/2 and 2 Inches Outer Diameter Adjustable HSS