Decription: 10Pcs Aquarium Suction Cup Tubing CO2 Air Line Pipe Pump Tube Sucker    Fits for 4mm standard air line.   Elastic holder clip、 well clip air line and easy to install\/ uninstall.   Good suction、 can be used for aquarium and any glass surface.   According to your demand、 adjust this sucker to fit for air line length and shape.    Specification:   Color: Clear   Total Height: 2cm\/ 0.79inch   Outer Diameter of Clip: 0.6cm\/ 0.24inch   Diameter of Suction Cup: 2.7cm\/ 1.06inch       Package Includes: 10 x Suction Cups