These fish tank hose barb reducer fittings are essential for maintaining an efficient water circulation system. Crafted from PVC, they offer excellent durability and resistance to wear. The flexible PVC design allows for easy attachment to various water pipes, making them suitable for both freshwater and marine aquariums. Features -Color:White -Material:PVC -Size:5.00X1.60X1.30cm/1.97X0.63X0.51in -Note: outer diameter: about 13mm, 16mm -Robust construction: constructed from PVC, these adapters are designed to offer high resistance to wear and wear, ensuring longevity -Secure fit: the adapters are engineered to provide a snug fit with water pipes, eliminating the risk of leaks and ensuring efficient water flow -Compact: Lightweight and compact. It is easy and convenient to use, and easy to store when not in use -Simple installation: these adapters can be installed effortlessly without the need for professional tools, making the process quick and straightforward -Broad compatibility: for use in aquariums, fish tanks, and water pumps, these adapters are versatile and meet various needs Package list: 5 x Aquarium Pipe Adapter