1、Versatile Application: The valve core remover tool is for R22 R12 R407 R410 R404 R32 AC system. Please confirm whether it is consistent with the product you want before buying to avoid unnecessary return. 2、Double Head Design: The valve core remover AC repair tool features SAE 1/4in and 5/16in ports, also with dual size, suitable for a wide range of AC systems. 3、Efficient and Convenient: The AC line valve core remover installer tool can quickly, effectively, and safely remove and install valve cores without the need to shut down the refrigeration system, greatly improving work efficiency. 4、Sturdy Construction: The dual size valve core remover installer tool is made of high strength and sturdy brass material, resistant to wear, tear and rust, ensuring long lasting use. 5、Easy to Use: The AC valve core remove install tool set simplifies the maintenance and repair of AC systems, providing professional results with ease, saving your time and effort.