Features:1. Made of high quality material, durable and practical to use.2. Good computer controlled machine tool, many parts of the connection can ensure that it will not leak.3. It is easy to switch operations no matter how the safety valve is placed.4. The safety stem ejector will move forward to the air valve in the pipe stem valve. Description:The movable thimble can precisely control the valve needle high and low pressure air conditioning. Sealed before treatment, safe and reliable. Specifications:Red: R22 to R410Blue: R22 to R22Length: 130mmHeight: 50mmWidth: 70mmMaterial: CopperDiameter: Male: 1/4", Female: 5/16"Package Included:1*R410A(Red) Adapter1*R22(Blue)AdapterNotes:1. Please allow 0-1 inch error due to manual measurement. Thank you for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object.