[High & Low Voltage Quick Connector] Our AC valve core removal tool kit provides two quick connectors the high-pressure connector (red) with a 16mm bottom ID and the low-pressure connector (blue) with a 13mm bottom ID. The ball valve on the side can be opened and closed by a quarter turn. This prevents refrigerant leakage in the air conditioning system when replacing the valve core. [ Material] This valve core removal tool is mainly made of brass, which is strong and impact-. The valve stem is made of stainless steel the red and blue knobs are made of aluminum. The external anti-skid texture design is easy to hold and use and prevents the problem of excessive force on various valves. [Easy To Use] The valve core remover is very easy to use, the valve core grab tool can be easily inserted inside and control the valve core, and the valve stem has strong suction, which can hold the valve firmly and help you replace the valve core easily. [Wide Applications] The valve core quick remover installer tool can be adjusted according to different valve cores to suit various types of valve cores,valve core tool is suitable for maintenance and repair of automotive refrigeration and air conditioning, HVAC. [What You Get] The AC valve core kit contains 2pcs R134A valve core quick removal tools (high pressure/low pressure) 10pcs R134a valve core, 10pcs 5V1 valve core, 8pcs AC service port caps, and 1pcs double-ended valve stem removal tool. This valve core removal tool is mainly made of brass, which is strong and impact-. The valve core quick remover installer tool can be adjusted according to different valve cores to suit various types of valve cores, suitable for maintenance and repair of automotive refrigeration and air conditioning, HVAC. The valve core grab tool can be easily inserted inside and control the valve core, and the valve stem has strong suction, which can hold the valve firmly and help you replace the valve core easily. Size: 16mm bottom ID (High-pressure)/13mm bottom ID(Low-pressure) Color: As Shown Material: Metal+Plastic Package Contents: 1set * R134A Valve Core Quick Remover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.