Arlington low profile cord connector has a unique grommet with gripping fingers. These connectors have the largest cord range in the industry, so there are fewer items to stock. a liquidtight seal and superior pullout resistance is accomplished by just tightening the nut. a sealing ring is furnished to assure a liquidtight seal when installing in non-threaded openings. Arlington Cord Connector, Low Profile Liquidtight Oiltight Strain Relief, 1/2 in Trade, Cable Openings: 0.385 to 0.75 in, Straight Connection, Nylon/Polyethylene/Santoprene™/Zinc, Gray, 1.23 in L x 1.23 in W x 2.25 in H Dimensions