3″ Bronze Thru-Hull Fitting with NutHigher flow rates are possible with this 3″ GROCO thru-hull fitting than conventional thru-hulls.Features:NPSM / NPT combination threadC83600 BronzeUL listed 647BIncludes nutBSPP and stainless steel models are availableSpecifications:Thread NPS: 3″ Specifications:Hose Size: 3″Material: BronzeBox Dimensions: 5″H x 5″W x 5″L WT: 4.8 lbsUPC: 742985064164