HORUSDY 6Pc NPT Pipe Tap Set Thread Tap Screw Tool 1/8" 1/4" 3/8" 1/2" 3/4" 1"Carbon steel pipe taps are designed to clean and or rethread to damage or block pipe threads. Right hand cutting tool has a clockwise cutting function. NPT Pipe taps sizes includes: 1 4" 18 NPT, 3 8" 18 NPT, 1 2" 14 NPT, 3 4" 14NPT, 1" 11. 5NPT. Equipped with special storage box. Round shank, square end. Straight flute tools allow chips to collect in the Flutes as they cut and are well suited for most applications in shallow cuts. Uncoated tools have