ITEM NAME:Thru Hull Fitting Through Hull , Inlet Inner Dia:0.6inch,Outlet Inner Dia: 15mm Description: Thru-Hulls are meant for installation through the transom and are design for overflow use in livewell installations or as an exhaust port for a bilge pump. The construction of thru-hulls is designed to resist degradation as a result of chemical and saltwater exposure. Molded white plastic with broad flange Per ABYC "Safety Standards for Small Crafts" Easy to install and remove,Simple to use Suit for 5/8 inch Hose Barb. Specification: Material: Plastic Size: Approx. 73.5x42mm / 2.9 x 1.7 inch Inlet Inner Diameter: Approx. 15mm / 0.6 inch Outlet Inner Diameter: Approx. 10mm / 0.4 inch Package Includes: 1 Piece Thru Hull Fitting Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks! SKU: DMO0000492867017418.1 Piece Thru Hull Fitting. Color may be slightly different since different monitor. Easy to install and remove,Simple to use. SKU: DMO0000492867017418.