Feature: 1. Built-in sealing ring to prevent water leakage, safer and worry free to use. 2. The connector is a standard G1 / 4 internal thread, which is compatible with all connectors with the same standard external thread. 3. The water flow can drive the impeller to rotate, achieving beautiful and intuitive visual effects. 4. The water flow meter can be to observe the water flow rate in the computer water cooling system to prevent the pump from stopping and causing overheating. 5. Compact size and light weight, easy to carry around with you. Specification: Condition: 100% Brand New Item Type: Water-Cooling Flow Meter Material: PMMA + Aluminium Alloy Optional Color: Blue, Red, Silver, Black Size: Approx. 41 x 41 x 25mm / 1.6 x 1.6 x 1in (L x W x T) Thread: Internal G1/4 x 3 Sealing Method: Built-in sealing ring Surface Treatment: Hand polished. Package List: 1 x Water-Cooling Flow Meter Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.