E5YK Plastic Three Way Control Valve Cross Switch for Fish Tank Aquarium Oxygen Pump - Gray (20PCS)
Brand N/A Model E5YK Quantity 20 piece(s) per pack Color Grey Material Plastic Specification Suitable for adjusting air volume of the air pump; Can be used on 4 x 6cm air pump. It can be used as a back-pressure valve if screwed to the end. Packing List 20 x Control valves