1. Given that it is with 45 mm diameter tube, which enables to hold more water and speeds up cooling. 2. The upper and lower covers are high temperature resistant engineering plastics and the transparent part is acrylic. 3. It is because that such a water tank is with practicalilty for long-term attraction, thus, you can feel free to use it. 4. Moreover, the upper and lower covers are strong glue seals, and the sealing performance is better than that of ordinary water tanks. 5. For tight connection, advanced G1/4 thread is equipped, so that it can be safety and leak-free. Item Type: Water Tank Application: Computer Case Model Number: Water Cooling PC colour:green material:abs+PMMA size:200 x 40mm Package Contents: 1x water tank 2x half circle 2x screws 2x nut Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.