[Function]: This flow indicator is used to observe water flow speed of water cooling system, in case that pump stops working and causes overheat [Water Cooling Flow Indicator]: Brightly colored polypropylene paddle wheel spins when gas or liquid flows through a system [Material]: Made of high quality tungsten alloy material with compact size, the water flow indicator is easy to install and use [Application]: With G1/4 inch standard thread, the sight flow indicator is widely fit for most computer cooling tubes or connectors Features: - This flow indicator is used to observe water flow speed of water cooling system, in case that pump stops working and causes overheat. - The design is novel, simple and practical, easy to install, small size and durable. - Green impeller is convenient for observation, normally used in computer or other water cooling systems. - G1/4 standard thread is widely fit for most computer cooling tubes or connectors. - Apart from observing water flow, it is also a great and delicate decoration. Specifications: Material: Tungsten alloy Thread Standard: G1/4" Quantity: 1pc Material: acrylic, metal mold Surface treatment: polishing Function: observe water flow decoration, etc Weight: 56g Size: 4 3.5 2.5 unit cm Package Includes: 1 * Water Flow Indicator