ITEM NAME:20pcs Air Pump Accessories Check Valve Air Valve Check Valve 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: Material: Plastic Size Chart: Check Valve: Size(LxW): Approx. 35x20mm / 1.38x0.79inch Outer Dia.: Approx. 5mm / 0.20inch Package Includes: 20 Pieces Aquarium Tank Accessories Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. SKU: DMO0015385919414875.Quantity: 20pcs. Three aquarium air pump accessories: Air Valve Connector, Check Valve, Air Valve. Check Valve Due to the light and screen setting difference, the item's color may be slightly different from the pictures.