Halex 1/2 in. Electrical Metallic Tube (EMT) Compression Connectors (5-Pack) 26230 - The Home Depot
Sigma ProConnex 1/2-in Electrical (EMT) Zinc-plated Steel Compression Connector Conduit Fittings (5-Pack) in the Conduit Fittings department at Lowes.com
Sigma Electric ProConnex TC-501 EMT Set Screw Connector 1/2-Inch, 50-Pack Gray - Conduit Fittings - Amazon.com
Halex 1/2 in. Electrical Metallic Tube (EMT) Compression Connector (25-Pack) 62305B - The Home Depot
Halex 1/2 in. Electrical Metallic Tube (EMT) Set-Screw Connectors (5-Pack) 26270 - The Home Depot