This 4pieces aquariums tubing adapter set ensures seamlessly connection between different pipe diameters, resistant for longlasting in various water environment adjust water circulations systems for home aquariums or commercial use by bridging tubing connection between equipment Easy installation and leakproof seal designs, the adapter provide easily use and great water flows management for aquariums systems Design for aquariums hobbyists and professional maintaining fishtanks, this tube connector essential for connecting, heaters, and air pumps with incompatible tubing size Suitable with major aquariums brands and both flexible tubing makes this water hose connector set great for creating customizing, leakfree plumbing configuration