$2.78
Cast Iron Jaw Coupling Hub, Style L050, 1/4" Bore Diameter, No KeywayGlobal Industrial$20.65
2" x 2" ProFlex Coupling (Cast Iron, PVC, Steel to Copper)Amazon$6.33
Shielded 3 in. Steel Transition Coupling Connects Cast Iron to Plastic Extra Heavy Cast IronThe Home Depot$5.50
Shielded 2 in. Steel Transition Coupling Connects Cast Iron Plastic or 2 in. Plastic to SteelThe Home Depot$15.32
Fernco PROFLEX P3001-215 Shielded Pipe Coupling for Cast Iron, Plastic, or Steel to Copper Plumbing ConnectionsAmazon$13.99
1/2" Pipe Fitting Coupling, Home TZH 10 Pack 1/2" Malleable Iron Cast Pipe Coupling for Steam-punk Vintage Shelf Bracket DIY Plumbing Pipe Decor Furniture (10, 1/2")AmazonSAVE $12.01
$47.99$60.00
Martin 9S 1 5/8 Quadraflex Coupling Flange, Cast Iron, Inch, 1.625" Bore A, 1.625" Bore B, 6.35" OD, 2.406" Length, 1800 in-lbs Nominal TorqueAmazon$7.08
Shielded 3 in. Cast Iron Transition Coupling Connects to CopperThe Home Depot$8.59
uxcell Brass Cast Pipe Fittings Coupling 3/4 X 3/4 G Female Thread Gold Tone 2pcsAmazon$20.99
Morris Products 14871 EMT Set Screw Coupling, Zinc Die Cast, 3/4" Trade Size (Pack of 25)Amazon$4.68
Fernco 2-in. Ideal Flexible Neoprene Coupling Fittings for Cast Iron Pipe - Strong and Secure Sealing | PNH-22Lowe's$2.08and up
Sigma ProConnex 1-in Electrical (EMT) Die Cast Zinc Compression Coupling Conduit Fittings | 02-55262Lowe's & 1 more$15.99
Beduan Stainless Steel Cast Pipe Fitting, Coupling, 1/2" x 1/2" Female Threaded (1" Length, Pack of 10)Amazon$5.59and up
Sigma Engineered Solutions ProConnex 3/4 in. D Die-Cast Zinc Compression Coupling For EMT 5 pkAce Hardware & 1 more