Five Oceans Nylon Stainless Steel Thru-Hulls, 3/4", 1" and 1 1/2" Hose Dimensions: 3/4" Material: Nylon & Stainless Steel Type: Thru-Hull Fittings Cosmetic upgrade to nylon thru-hull Dimensions: 3/4&#034; Material: Nylon &amp; Stainless Steel Type: Thru-Hull Fittings Cosmetic upgrade to nylon thru-hull