Jardin 5-Piece Plastic Aquarium Airline Tubing Straight Joint, 8mm to 4mm, White Aquarium Air Valve Tube; Material: Plastic Color: White; Design: 4mm to 8mm Fit Air Tube: 4mm/0.16", 8mm/0.31";Overall Size: 65 x 4 x 8mm/25" x 0.15" x 0.3" (L*Diameter*Diameter) Net Weight: 9g Package Content: 5 x Aquarium Air Valve Tube