Standard Pack = 1 piece(s). Adapter Size = 2 IN ; Gage Length = 3.54 IN ; Nose Diameter = 1.97 IN ; Shank Size = BT40 ; Tap Range (Fractional) = 5/16 to 7/8 IN ; Tap Range = M7 to M22 ; Tap Range (Pipe) = 1/4, 3/8, 1/2 IN ; Type = BT Rigid Tap Holders ;