uxcell Plastic Fish Tank Aquarium Airline Tubing Connectors Airstone Oxygen Pipe 5 in 1 Product Name : Aquarium Oxygen Pipe Set;Stone Size : 42 x 15 mm / 1.7" x 0.6" (L*D) Air Tubing Connector Size : 40 x 18mm / 1.6" x 0.7" (L*W);Aquarium Oxygen Pipe Total Length : 2.48Meters / 8.1" Aquarium Oxygen Pipe Dia. : 4 x 6mm/ 0.16" x 0.24";Material : Mineral, Plastic, PVC Color : Black, Green, Clear Blue;Weight : 73g Package Contents : 5 Pcs x Aquarium Air Stone Sets