SPC-10-10-F
Ruland SPC-10-10-F, 0.625" x 0.625" Bore, Black Oxide Steel 2 Pc. Rigid Coupling
I like that Allen Bradley uses standard DIN rail mounting for most devices.
Ruland Two-Piece Rigid Coupling with Keyway Steel Bore 5/8" x 5/8" SPC-10-10-F
A nice touch with Venom Carbon is the subtle texture that hides fingerprints really well.