With impellers design improves the cooling efficiency. G1/4-inch thread is widely fit for most computer cooling tubes or connectors. Convenient for observation, normally used in computer or other water cooling systems. Made of good quality alloy material with compact size, the water flow is easy to install and use. This flow is used to observe water flow speed of water cooling system, in for case that stops working and causes overheat., Manufacturer: ZXZZAS