Aquarium One Way Check for Valve Fish for Tank Air Pump Accessories Plastic Check Valves for Oxygen Line Tubing 4mm ID H

Great one way check for valve for aquarium and fish for tank. Protect you air pump by preventing aquarium water from back siphoning during a power outage. Detachable design makes it easier for you to clean and repair. Aquarium One Way Check for Valve Fish for Tank Air Pump Accessories Plastic Check Valves for Oxygen Line Tubing 4mm ID H. Features: Great one way check for valve for aquarium and fish for tank. Protect you air pump by preventing aquarium water from back siphoning during a power outage. Detachable design makes it easier for you to clean and repair. Unscrew to open it. Efficient, effective for protection for your pump. Specifications: Material: Plastic. Length: app. 4.3cm/1.69in. Color: Black Transparent. Package Includes: 1 x Air Check for Valve without retail package). note: 1. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2. Due to the difference between different monitors, the picture may not reflect the actual color o