Features: Brand new and high quality The movable thimble allows for precise control of the high and low pressure valves needle in your air conditioning system, while the sealed factory handling ensures reliability. Whether you're a homeowner looking to upgrade your refrigerant or a professional maintenance personnel or installation engineer, these valves are sutiable multiple brands and models, catering to different user needs. Perfect for home air conditioning maintenance or upgrades, these conversion valves quickly convert R22 refrigerant to the more environmentally friendly R410A refrigerant without the need to replace the entire system. With their internal structure, these conversion valves provide stable cooling performances, improving the overall efficiency of your air conditioning system. Upgrade your cooling experience today! The design of the conversion head is simple and easy to use, and the user can complete the conversion process only by correctly connecting according to the instructions, without complicated operation steps. Specifications: Material:Metal Size:Approx.65mm/2.55inches Package Includes: 2Pcs Safety Valves note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.