Groco Bronze Hose Thru-Hull FittingGroco bronze thru-hull fittings are constructed of durable C83600 bronze and are available in a range of sizes. NPS thread with hose connection; UL Listed 647B; Specifications:Part NumberThread NPSHose IDABCDEWeightHTH-5001/2"1/2"2.7"0.3"1.7"1.1"1.3"0.4 lbs.HTH-6253/4"5/8"2.7'"0.3"1.9"1.1"1.3"0.6 lbs.HTH-10001"1"2.8"0.3"2.3"1.2"1.3"1.1 lbs.HTH-12501-1/4"1-1/4"2.8"0.3"2.6"1.1"1.3"1.2 lbs.HTH-15001-1/2"1-1/2"2.8"0.3"2.9"1.1"1.3"1.5 lbs.