Feature:1. Practical, it can be used in confidence for long time, which is kept long-term attraction.2. While with acrylic transparent part, upper and lower covers are made of high temperature resistant engineering plastics.3. It has a 45 mm diameter tube that allows the tank to hold more water and speeds up heat dissipation.4. Such a water cooling device is equipped with advanced G1 / 4 thread for tight connection, which can be safety and leak-free.5. Moreover, the upper and lower covers are strong glue seals, and the sealing performance is better than that of ordinary water tanks.Specification:Item Type: Water TankOuter Diameter of Water Tank: Approx. 4.5cm / 1.8inWater Tank Size: Approx. 100mm / 3.9inWater Tank Capacity: 140mlSize: 3 holes are G1/4 inner threadAccessories: The water tank only contains 2 half hoops (without any joints and water cooling stopper).Package List:1 x Water Tank2 x Half Hoop2 x Screw2 x Nut