Parts List: 2 x Automatic Air Vent Valve Highlight description: Widely Used: suitable for most heating systems, including hot water radiators, small heaters, etc Good Materials: The exhaust valve is made of good brass and has a good service life Easy Installation: It is quick to use without cumbersome steps and processes Exhaust: Vertical installation of the vent has good exhaust performance Compact Size: The product is small and does not take up too much space Detailed description: Description: The exhaust valve is made of nice brass and can be used quickly without complicated steps and processes. It has good exhaust performance and is suitable for most heating systems. Key Feature: Easy Installation: It is quick to use without cumbersome steps and processes. Exhaust: Vertical installation of the vent has good exhaust performance. Specification: Product Name: Automatic Air Vent Valve Material: Brass Dimensions: 3.15 inches high and 1.9 inches wide Thread: 1/8 inch Note: 1. There may be slight color differences between the product picture and the actual item. We will do our best to display the color as accurately as possible. 2. Please allow slight dimensional discrepancies due to manual measurement. Widely Used: suitable for most heating systems, including hot water radiators, small heaters, etc Good Materials: The exhaust valve is made of good brass and has a good service life Easy Installation: It is quick to use without cumbersome steps and processes Exhaust: Vertical installation of the vent has good exhaust performance Compact Size: The product is small and does not take up too much space