Standard Pack = 1 piece(s). Adapter Size = 3 IN ; Gage Length = 4.8 IN ; Nose Diameter = 2.83 IN ; Shank Size = BT50 ; Tap Range (Fractional) = 1/2 to 1-3/8 IN ; Tap Range = M12 to M33 ; Tap Range (Pipe) = 3/8, 1/2, 3/4, 1 IN ; Type = BT Rigid Tap Holders ;