Features: When the coolant pressure in the radiators exceeds the set value of the pressure cap, the coolant is sealed through the pressure cap and flows into the radiators coolant overflow tanks through the overflow tube. Tightly closed cap, fully TIG welded and equipped with O-rings gasket at the threads, allows the coolant reservoir to maintain a nice closed environment and prevents coolant leakage. Tanks level indicator for easy reading of the fluid level. Switchable inlet/outlet and level indicator can be placed either on the right or left side of the aluminum reservoir. Made of high-quality aluminum alloy with anodized surface, sturdy and with nice durability, corrosion resistant and not easy to rust. Easy to install and use, suitable for most vehicle. Bottom with electromagnetic drain plug design, easy to discharge and cleaning. Specifications: Color: Black/ Silver(optional) Material: Aluminum Alloy Capacity: 1L / 2L(optional) Item Size: 1L: 115 * 168 * 85mm/ 4.5 * 6.6 * 3.3in 2L: 220 * 168 * 85mm/ 8.7 * 6.6 * 3.3in Item Weight: 1L: 539g/ 19.0oz 2L: 781g/ 27.5oz Package Size: 1L: 200 * 155 * 95mm/ 7.9 * 6.1 * 3.7in 2L: 260 * 175 * 95mm/ 10.2 * 6.9 * 3.7in Package Weight: 1L: 633g/ 22.3oz 2L: 903g/ 31.9oz Packing List: 1 * Oil Catch Can 2 * Connector