Topaz 590 – Zinc Die Cast Set Screw Type Coupling – EMT to BX – (25 Pack)

Topaz’s set screw type Combination Couplings enable a concrete tight connection of 1/2” EMT conduit to 3/8” BX when taped. Quality zinc die cast construction ensures continued mechanical protection and provides excellent corrosion protection. Set screw couplings are fabricated with a diverse screw head to securely join conduit together. For indoor use; available in trade sizes of 1/2”-3/8”. UL listed and guaranteed for life.