Marine Grade Electrical Wire Seal - Round Cable, 4 to 1/0 AWG, 1/2" NPTLiquid tight Wire Seals provide low cost watertight cable entries into panels and junction boxes. UL and CSA approved to work with round cable. Resistant to saltwater, gasoline, alcohol, ketones, and mineral oil. Safe underwater to 300ft. (150 PSIG).Features:Round Cable AWG Range: 4 to 1/0 AWG Min/Max: .39-.56 Clearance Hole: .83 NPT Size": 1/2 WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications: Type: Cable Gland Box Dimensions: 1"H x 2"W x 4"L WT: 0.1 lbs UPC: 091887765021 Brochure (pdf)