Straight Multi-Cable Grip, Cord Dia. Range 0.23 in to 0.29 in, Box Connection 3/4 in MNPT, External Strain Relief Material Aluminum, Number of Cords 4, Strain Relief Type No External Strain Relief, External Strain Relief Length 2 1/16 in, Length - Box to End of Connector 1 1/2 in, Insulated No, Standards UL Listed, Hazardous Location Rating Class I Division 2, Class II Division 1, Class II Division 2, Class Ill Division 1