SODIAL(R) 10 Pcs Black Suction Cup Holder 20mm Dia Tube Airline for Aquarium Product Name : Aquarium Suction Cup;Color : Black Material : Plastic;Fit Tubing Max. Dia : 20mm / 0.8" Cup Diameter : 38mm / 1.5";Total Size : 38 x 40mm / 1.5" x 1.6" (D*H) Weight : 48g Package : 10 Pcs x Aquarium Suction Cups