1. From the high-end quality design, top-mounted rotation to consider the use of convenience. No matter how the safety valve placed, can easily switch operation. 2.High-end CNC machine tool processing, a number of parts of the connection can ensure that it is not leaked. The factory has been sealed before the treatment, safe and secure. 3. Selection of experienced design team, in strict accordance with the application of the product design to create. Activities thimble can accurately control the air conditioning high and low pressure valve needle. Size: R22: 1/4",R410:5/16",See the Size picture Package inlcuded: 1Pc EU Responsible Persons information: Name: PI NETWORK SARL Address:38 rue Dunois 75647 Paris CEDEX 13,75013,FR E-mail:friedlichrichter@outlook.com This merchant is committed to only offering products that comply with the General Product Safety Regulation.