ITEM NAME:1Pc 8 Impeller G1/4 Threaded PC Computer Water Cooling System Flow Meter In X4C3 1Pc 8 Impeller G1/4 Threaded PC Computer Water Cooling System Flow Meter In X4C3 This flow indicator is used to observe water flow speed from water cooling system, in case the pump stops working and causes overheating. Simple and practical, easy to install, small size and durable. G1 / 4 inch thread is wide fit for most computer cooling pipes or connectors. 8 impellers design improves cooling efficiency. Type: water cooling flow meter Seal: silicone seal ring Color: black + white Material: plastic Size: 77.5mm x 47.5mm x 19mm / 3.05 inchx 1.87inch x 0.75inch(Approx.) Package Contents: 1*Flow meter.8 impellers design improves cooling efficiency.