Material: Made from metal materials, this water flow indicator ensures long-last performance and reliability in your water cooling systemEasy Installation: With its simple yet practical design, this flow indicator is easy to install into your water cooling setup. Its compact size ensures it fits seamlessly while offering long-last durabilityEfficient Flow Monitor: Designed to monitor the water flow speed in your cooling system, this device helps prevent overheating by alerting you if the pump stop workingEnhanced Cooling Efficiency: Featuring an 8-blade impeller design, this liquid cooling fan flow meter significantly boosts the cooling efficiency of PC water cooling systemsCompatibility: It is widely suitable for most computer cooling tubes and connectors, making it a versatile addition to your setupSpecification:Material:MetalSize Chart:Type A: Length: 4.1cm/1.61inch,Diameter: 0.6cm/0.24inchType B:Length: 4.1cm/1.61inch,Diameter: 0.8cm/0.31inchPackage Includes:1 Piece Water Flow IndicatorNote:Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.