Features: ----This valve core removal tool is mainly made of high-quality brass, which is strong and impact-resistant. ----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. Specifications: Material: High-quality brass, stainless steel, and aluminum Color: Red, blue Size: 16mm bottom ID (High-pressure)/13mm bottom ID(Low-pressure) Package Includes: R134A valve vore quick remover installer tool set