About this item High & Low Voltage Quick Connectors: Our AC valve core removal tool kit includes a high-pressure (red) connector with a 16mm inner diameter and a low-pressure (blue) connector with a 13mm inner diameter. 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 Premium Quality Materials: Our valve core removal tool is designed with high-quality brass for strength and impact resistance. The stainless steel valve stem ensures durability, while the aluminum knobs are easy to handle. The anti-skid texture allows for a secure grip, preventing excessive force and damage to various valves Simple & Efficient Operation: This valve core remover is user-friendly and easy to operate. The valve core grab tool can be effortlessly inserted into the valve core, with strong suction that firmly holds the valve in place. This feature allows for a seamless and quick valve core replacement, making your maintenance tasks hassle-free Versatile Applications: Our 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 Complete Kit for Your Needs: The AC valve core kit includes two R134A valve core quick removal tools (high and low pressure), ten R134a valve cores, ten 5V1 valve cores, eight AC service port caps, and one double-ended valve stem removal tool