Hagen Marina Black Thermometer Suction Cups are specially designed to secure aquarium thermometers, heaters and airline tubes to tank walls. They provide tight adhesion in or out of the water and attach equally well to glass and acrylic surfaces.

• Suction cups for aquarium thermometers, heaters and airline tubing up to 3/4" diameter
• Provide excellent adhesion to glass or acrylic surfaces
• Suitable for wet or dry use
• Unobtrusive black color