20pc Aquarium Fish Tank Suction Cups For Sucker Pads Heater Pipe Air Tube 20 Pcs aquarium fish tank suction cups. Good Suction effect, can use for aquarium and any glass surface. Elastic holder clip, well clip air line and easy to install. Help to adjust air line length and shape according to your demand. Diameter of Suction Cup: 27mm / 1" Color: Transparent