77791 Adapter Size: #2 Tap Size Range: 0 – 7/8 HT to 1/8 1/2 PT Morse Taper: #3 Length: 3 11/16 in Proj.: 3.69 in Diameter: 1.96 in Radial Float: +- / 1/32 in A- Length B- Proj. C- Diameter