Sigma Engineered Solutions Sigma Electric ProConnex TC-601 EMT Compression Connector 1/2-Inch, 50-Pack Sigma's EMT Compression Connectors are used to secure and terminate steel EMT conduit to an outlet box or enclosure in dry locations. These die-cast zinc connectors are approved for concrete-tight applications. Features Terminates 1/2-in EMT conduit to a 1/2-in knockout in an outlet box or enclosure Compression type For concrete-tight and dry location applications Zinc die-cast construction Product is UL and CSA listed USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.