The bulkhead fitting adapter is suitable for sealing openings in water towers, water tanks, external pipes, valves, faucets, etc. It comes with a gasket which has better sealing performance. This fitting adapter is not easy to fade and is because it is made of high quality PVC. Color: Black Material: PVC Package Contents: 8 x Water Tank Connector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.