ITEM NAME:20x Fish Tank Air Pump Fitting Air Valve Connector Check Valve Accessories Description: Brand new and high quality. Three aquarium air pump accessories: Air Valve Connector, Check Valve, Air Valve. Use for: Tank, Aquarium Material : Plastic Quantity: 20pcs Specification: Color:Black/White Air Valve Connector #2: Length: Approx. 34mm / 1.34inch Bottom Dia.: Approx. 4mm / 0.16inch Upper Dia.: Approx. 3mm / 0.12inch Air Valve Connector #3: Size(LxW): Approx. 21x21mm / 0.83x0.83inch Outer Dia.: Approx. 5mm / 0.20inch Package Includes: 20 Pieces Aquarium Tank Accessories Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color tone of the pictures and the actual item. SKU: DMO0015420419433559.Three aquarium air pump accessories: Air Valve Connector, Check Valve, Air Valve. Use for: Tank, Aquarium. 20 Pieces Aquarium Tank Accessories. Air Valve Connector #2 Air Valve Connector #3 Due to the lighting effects, monitor settings, etc.