EMT Compression Couplings 3-1/2" - Steel - Steel EMT Compression Couplings are Used To Secure EMT Conduit to EMT Conduit.Steel EMT Compression Couplings 3-1/2" features include: Use to connect EMT Conduit to EMT Conduit Concrete Tight (When Taped) Heavy Steel Walls, Zinc Plated UL/CSA or cULus Listed Also UL Listed for use with Rigid IMC Order Qty of 1 = 1 Piece Below is more info on our Steel EMT Compression Couplings 3-1/2"