1pcs DIY Aquarium System Kit Fish Aquarium Hose Valve Pipe Valve Quick Release Connector Connector Adapter
1:16mm is suitable for connecting hose with 16mm inner diameter.
2:12mm is suitable for connecting hose with inner diameter of 12mm.
3:It can be opened and closed independently, and the connector is sealed by thread to wire, which makes it durable. Fast disassembly and assembly of hose.