uxcell White Plastic 2.5mm Air Line Tubing Joints Connectors for Aquarium Color: Clear White; Package Content: 1pack x Aquarium Air Tubing Total Size: 27mmx8mm/1.06''x0.31''(LxD); Material: Plastic Product Name: Aquarium Air Tubing; Net Weight: 161g Outlet Diameter: 5mm/0.19'' Inside Diameter: 2.5mm/0.09''