This water flow meter is designed to monitor water flow speed in water cooling systems, helping to prevent overheating in case of pump failure. The simple and practical design is easy to install, compact, and durable. Green impellers provide clear visual indication of flow, and the standard G1/4 thread is compatible with most computer and water-cooling system components. Constructed from high-quality aluminum alloy for long-lasting performance. Dimensions: 3.5cm x 4.4cm x 2.5cm / 1.38" x 1.73" x 0.98" (Approx.). Commonly used in computer water cooling systems. Item Name: Water Flow Meter Material: Aluminum Alloy Thread Size: G1/4-inch Size Details: Size: 3.5cm x 4.4cm x 2.5cm / 1.38" x 1.73" x 0.98" (Approx.) Notes: Due to lighting and screen settings, the item's color may vary slightly from the images. Please allow slight dimensional variations due to manual measurement. Package Includes: 1 x Water Flow Meter