Efficient Water Flow Monitors: This 8 impellers turbine-stylewater flow indicator is designed to be installed between two pipe, allowing you to easily observe and monitors the speed of water flow, whether it's fast or slowG1/4 Thread Compatibility: Equipped with a G1/4" thread, this water cooling flow meter has an actual outer diameter of 12.9mm, ensuring compatibility with standard fittings for seamless integration into your cooling systemPVC Construction: Made from PVC, thisPC computer cooling system is built to withstand regular use while maintaining its performance and appearance over timeCompact and Lightweight Design: With dimensions of 7.6cm in length, 2.3cm in width, and 4.7cm in height, this device is compact enough to fit into tight space without adding significant weightAesthetic Strengthen for Your System: Beyond its functional benefits, the sleek black design of the flow meter adds a decorative touch to your setup, making it not only practical but also visually appealing for enthusiasts who appreciate both form and functionSize Chart:Thread: G1/4"Overall: 7.6cmx2.3cmx4.7cm/2.99inchx0.91inchx1.85inchPackage Includes:1x WaterFlowIndicatorNote:Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.