25 Piece, SAE Fractional Tap & Die Set, Dies Are Ideal For Routine Maintenance, Repair Work & For Rethreading Where High Accuracy & Tolerance Thread Is Not Critical, Taps Have Straight Flutes Which Are Ground To Provide Rapid Chip Removal For Efficient Threading, Designed For Hand Threading Work In A Variety Of Materials, Taps Produce A Class 2B Thread Includes Fractional 9/16inch x 12NC, 9/16inch x 18NF, 5/8inch x 11NC, 5/8inch x 18NF, 3/4inch x 10NC, 3/4inch x 16NF, 7/8inch x 9NC, 7/8inch x 14NF, 1inch x 8NC, 1inch x 14NS Tap & Dies, Pipe 1/4inch x 18NPT Tap & Die, Adjustable Die Stock For 1-7/16inch Hex Dies, Adjustable Die Stock For 1-13/16inch Hex Dies, Adjustable Handle Tap Wrench For Taps 1/4inch - 1inch.