Sold as 50 each. Used to secure, and terminate steel EMT conduit to knock-outs in concrete- tight boxes or dry location applications. Concrete-tight. Single set screw. Zinc die-cast. Bagged. UL/CSA. 1/2". Manufacturer number: 49230. SKU #: 3183126. Country of origin: (TBA). Distributed by Gam-Pak Products.