Application: Can apply to Thermaltake BigWater and other liquid cooling system For 5.25" drive bay: the indicator can fit into 5.25" drive bay in the case Quick Install Connectors: The connection of the temperature probe is suitable for tubing of 6.4 to 9.5 mm to inner diameter Liquid Level: Transparent window indicate the level of the water Easy to Install: using the provided screws to mount the water tank in the case Convenient to Refill: It is Convenient to fill the water in the tank