Standard Pack = 1 piece(s). Adapter Size = 4 IN ; Gage Length = 6.18 IN ; Nose Diameter = 3.86 IN ; Shank Size = BT40 ; Tap Range (Fractional) = 1-7/16 to 1-7/8 IN ; Tap Range = M36 to M42 ; Tension Compression = 1.02 IN ; Type = BT Tension & Compression Tapping Holders ;