Ruland MOCT41-12-SS, 12mm Oldham Coupling Hub, 303 Stainless Steel, Clamp Style, 41.3mm OD, 18.0mm Length

Ruland FCR12-8MM-5/16"-SS, 8mm X 5/16" Six Beam Coupling, Stainless Steel, Clamp Style, 0.750" (19.1Mm) OD, 1.250" (31.8Mm) Length

Ruland SCC-6-6-SS, 3/8" X 3/8" Rigid Coupling, 303 Stainless Steel, Set Screw Style With Keyway, 7/8" OD, 1 3/8" Length

Ruland PSMR16-5-5-SS, 5mm X 5mm Four Beam Coupling, Stainless Steel, Set Screw Style, 15.9mm OD, 20.3mm Length

Guillemin DN 50 Stainless Steel Coupling G 2' Male Threads With Lock

Ruland MCLX-20-16-SS, 20mm X 16mm Rigid Coupling, 303 Stainless Steel, One-Piece Clamp Style, 42mm OD, 65mm Length

Set Screw Coupling W/Keyway, 1/2", Stainless Steel, RC-050-S-KW

2-Piece Industry Standard Clamping Couplings W/Keyway, 1-1/4", Stainless Steel, 2ISCC125-100SKW

Ruland MSPC-12-12-F, 12mm X 12mm Rigid Coupling, Black Oxide Steel, Two-Piece Clamp Style With Keyway, 29mm OD, 45mm Length

SRC-100-SS Solid Rigid Coupling 1" ID Stainless Steel 1 Pack

Climax 1-1/4" Inside X 2-1/4" Outside Diam, Stainless Steel Set Screw Rigid Coupling 4" L Rc-125-S - 09045493