Do you wanna some practical and durable aquarium filter hose reducer barbed fittings? If you want, then you can consider our product. It is made from reliable plastic material, not easy to break and damage, durable and practical. fish tank oxygen aeration pump connectors. Features -Color:As Shown -Material:Plastic -Size:7.70X2.80X1.10cm/3.03X1.10X0.43in -Four-heads hose adapter：2.4mm(for hose inner diameter 1-3mm), 3.9mm(for hose inner diameter 2-4mm), 4.8mm(for hose inner diameter 4-6mm), 6.4mm(for hose inner diameter 5-7mm) -Five-heads hose adapter：2.4mm(for hose inner diameter 2-4mm), 3.9mm(for hose inner diameter 2-4mm), 4.8mm(for hose inner diameter 3-5mm), 6.4mm(for hose inner diameter 5-7mm). - The hose connector is made of plastic material, wear resistance, sturdiness and durability, smooth surface. - Excellent craftsmanship makes aquarium hose adapter have the characteristics of high strength for lasting use. - Wide compatibility. coupling is suitable for the fish tank water filtration system . - Multi-functional hose adapter is designed to be durable and withstand wear and tear over a long period of time. - Scientific design, avoid water overflow. The hose reducer fitting can be used with hose or tubing. Package list: 12 x four-heads hose adapter 12 x five-heads hose adapter