Made of high quality that will resist sunlight, oil, gasoline and most common marine chemicals. Their construction is designed to resist degradation as a result of chemical and saltwater exposure. Covered with a stainless steel cap that gives them a beautiful polish end and smooth . Molded plastic construction with broad flange. Meets ABYC safety standards for small boats. For 3/4 inch Hose Height: 7.50cm / 2.95 inch Top diameter: 5.20cm / 2.05 inch Bottom diameter: 1.80cm / 0.71 inch Colour: black Material: plastic Package Contents: 1 * Thru-Hull Hose Fitting Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.