Specification: Type: Refrigeration tool Material: stainless steel and brass Red:Internal thread: M14 External thread: 1/4SAE Connector: 1/4 SAE Temperature: normal temperature Pressure: low pressure Application: R12,R600 R22, R134a, R410A gas Features: 1.100% brand new and high quality 2.Made of high quality material, practical to use 3.From the high quality design, the top rotation is easy to use 4.Good CNC machine tool processing, multiple parts of the connection can ensure that it does not leak 5.It is easy to switch operations regardless of how the safety valve is placed 6.The movable thimble can precisely control the air conditioning high and low pressure valve needle 7.The safety stem ejector will move forward to the air valve in the stem valve of the pipe