STZ 1/2 in. Galvanized Iron Compression Coupling 311 CCL-12 - The Home Depot
EC761US Amfico 3/4" Steel Emt Compression Coupling - U.S. Made
Thomas & Betts HK402 Steel City Compression Coupling | Standard Electric Supply Co.
665S EMT Couplings Compression Type 1-1/2"
3” Pipe Compression Coupling
Sigma ProConnex 1-in Electrical (EMT) Zinc-plated Steel Compression Coupling Conduit Fittings in the Conduit Fittings department at Lowes.com
Eastman 4-1/8 Inch Long Pattern Compression Coupling, 3/4 Inch IPS, Galvanized Steel, 20564 - Amazon.com
Sigma ProConnex 1/2-in Electrical (EMT) Zinc-plated Steel Compression Coupling Conduit Fittings (5-Pack) in the Conduit Fittings department at Lowes.com