Sigma Engineered Solutions Sigma Electric ProConnex C-750 NM/SE Clamp Type Connector 3/4-Inch, 50-Pack Sigma's NM Clamp Type Cable Connectors are used to terminate NM and SE Cables to a 3/4-in knockout in a dry location box or enclosure. These die-cast zinc connectors feature a reversible locknut to preserve grounding. Features Terminates NM or SE Cables to a 3/4-in knockout For one 10/3 - 4/2 NM Cable, 0.52-in x 0.61-in by 0.51-in x 0.80-in Oval SE or 0.57-in - 0.69-in Round SE Also fits multiple two NM Cable configurations Zinc die-cast construction and tri-combo screws included 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.