Ball Joint, right hand thread, rubber grommet seal, size: 3/8-24 male and female threads, length: 1-11/16", 7/8" tread length, MTD -1985 and newer, Replaces: MTD 723-0156, Murray, 21031, Snapper 1-0745, Scag 48118, Bobcat 108078, Exmark 373077, P/N 45-104