Feature: 1. LOW AND HIGH TEMPERATURE RESISTANT: Aquarium hose adapter fittings are robust and durable and can withstand high or low temperatures. 2. DIFFERENT PIPE DIAMETERS: Aquarium hose adapter fittings allow the connection of different hose diameters for the simultaneous use of different hoses. 3. DIFFERENT MATERIAL: Aquarium hose adapter L fitting can be used with PVC, PU and rubber hoses. 4. EASY TO CONNECT: Elbow hose joint makes it easy to connect different hose diameters to fish tanks or other equipment at the same time. 5. SAFE MATERIAL: Elbow hose joint is made of plastic, safe, non toxic, odourless and has no effect on water quality. Specification: Item Type: Aquarium Hose Adapter Fittings Material: Plastic Use: Water Hose Adapter Suitable for use with 8 mm/0.31in inner diameter hoses and 12 mm/0.47in inner diameter hoses. Package List: 20 x Aquarium Hose Adapter Fittings