100 Pcs Aquarium Tank Sucker Suction Cup for 5mm CO2 Airline Pipe Tube Product Name : Aquarium Airline Sucker;Fit Airline Diameter : 5mm / 0.2" Suction Cup Diameter : 27mm / 1";Material : Plastic Color : Clear Weight : 130g Package Content : 100 (+/-2%) x Aquarium Airline Sucker