Description: Aquarium suction cup clips for finsh tank heater, air tube, pump holder; Fit Airline Diameter : 5mm/6mm/7mm/10mm/13mm/16mm/23mm; Suction Cup Diameter : 25mm/26mm/27mm/31mm/45mm; Made of plastic, clear color; It is a strong sucker cup, easy intall to the bottom or the side of the fish tank; Comes with pack of 10 pieces; Specification: Material: Plastic #1-Fit Airline Diameter: 6mm/ 0.24inch; Suction Cup Diameter: 27mm/ 1.06inch; #2-Fit Airline Diameter: 5mm/ 0.20inch; Suction Cup Diameter: 27mm/ 1.06inch #3-Fit Airline Diameter: 7mm/ 0.28inch; Suction Cup Diameter: 26mm/ 1.02inch; #4-Fit Airline Diameter: 10mm/ 0.39inch; Suction Cup Diameter: 25mm/ 0.98inch #5-Fit Airline Diameter: 13mm/ 0.51inch; Suction Cup Diameter: 25mm/ 0.98inch; #6-Fit Airline Diameter: 16mm/ 0.63inch; Suction Cup Diameter: 31mm/ 1.22inch; #7-Fit Airline Diameter: 23mm/ 0.91inch; Suction Cup Diameter: 45mm/ 1.77inch; Package Includes: 10 x Aquarium Suction Cup Note: Due to the manual measurement and lighting effects, there is a slight difference between the size and color from the above and the actual item.