Sold as 50 each. Used to join secure and terminate steel EMT conduit to knock-outs in concrete- tight box or dry location applications. Concrete-tight. Single set screw. Zinc die-cast. Boxed in bulk. No individual UPC"s. UL/CSA. 1/2" . Manufacturer number: 55230. SKU #: 30405. Country of origin: (TBA). Distributed by Gam-Pak Products.