Hubbell-Raco 3782-6B2 Liquidtight Strain Relief Cord Connector (2 Pack), 3/4-Inch Steel or malleable iron construction insures mechanical protection for the raceway Zinc electro plated for corrosion resistance Unique neoprene grommet design which is forced up and around the cord when the nut is tightened for a positive liquidtight seal For cord and cable range 250 to 375 Suitable for use in class 1, div 2; class 2, div 1&2; class 3, div 1&2 hazardous locations