Universal intake installation kit for 16/22mm (594) tubing. Kit includes: 2 suction cups with clips, hose coupling, set of sealing rings, inlet strainer, cap, connector complete with cup and sealing rings for hose. A basic set for attaching to the inlet side of all external filters. With this set you can decide where the water will be sucked into the aquarium. A completely safe and watertight hose and InstallationsSET1 connection. Depending on your preference the suction pipe can be lengthened or shortened. Easy cleaning of the hose without removal. Safe, permanent attachment in the tank with EHEIM quality suction cups.