uxcell Plastic Aquarium Air Tube Pipe Pump Valve Connector Tubing 20pcs Clear Fit Tube Inner Dia(Max): 4.7mm/0.18''; Product Name: Aquarium Air Valve Color: Clear; Material: Plastic Total Size: 23 x 9mm/0.9" x 0.36"(L*D) Net Weight: 8g Package Content: 20 x Aquarium Air Valve