For Martin spading-closing wheels with two single row bearings, SH80172 Martin fCrusher wheel; John Deeere planter ME2, Plus, Pro; early XP, XP Pro; drill early 750 cast iron closing wheel.
For original JD cast closing wheel on John Deere MaxEmerge®2, Plus, Pro, XP, XP Pro, ME5, ME5e, EE planters; NTW2 cast closing wheel on 750 drill to s/n 3834; SH313060 cast closing wheel on late 750 and 1850; also early 750 with updated wheels.