Sigma Engineered Solutions Sigma Electric ProConnex 02-51255 NM/SE Service Entrance Head 1-1/2-Inch, 1-Pack Sigma's Service Entrance Caps are used as a connecting point in an overhead service entrance and can be mounted on threaded or unthreaded Rigid, IMC or EMT Conduit. They are clamp-on type for easy installation and have a phenolic insulator with multiple holes. Features Connecting point in an overhead service entrance Easy clamp-on type installation for 1-1/2-in threaded/unthreaded Rigid or EMT conduit Phenolic insulator with (2x) 19/32-in, (1x) 7/16-in and (3x) 3/4-in holes Aluminum die-cast construction Product is UL and CSA listed for use in wet locations Sigma Electric 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.