This U-joint goes from 1"-48 spline to 3/4" smooth (Sm). Howe's codes for the ends are 18 and 06.
- End 1: 1"-48 spline (code 18)
- End 2: 3/4" smooth (Sm) (code 06)
Match your shaft splines against the ends listed in the specs before you order.
Howe Performance part number UJ-1806.