HAND TAP SET, HSS, GT, 1/2 BSW, 3PC; Kit Contents:3 Pieces 1/2 Taps; SVHC:No SVHC (16-Dec-2013); AF Size - Metric:7.10mm; External Diameter:12.7mm; Kit Contents Descriptive:Set of three 1/2 taps; Overall Length:89mm; Shank Dia:9mm; TPI (f):12; Thread Length:22mm; Thread Size:1/2; Thread Type:BSW