Cleveland General-Purpose Pipe Tap, List Style: 963, Bright Finish, Thread Type: NPS, Size: 1/2-14, Thread Length: 1-3/8 IN, Decimal Equivalent: 0.5000 IN, Length: 3-1/8 IN, Number Of Flutes: 4, Material: High Speed Steel, Shank Type: Straight With Square, Shank Diameter: 11/16 IN, Shank Square Size: 0.515 IN, Shank Square Length: 5/8 IN, Tap Blank Construction: USCTI Table 311, Tap Chamfer: Taper Pipe, For Alloy Tool Steel, Carbon Steel