This Mastercool R134a valve core remover and installer (81490) is a must-have for any mechanic or DIY enthusiast. Its compact design and durable construction make it the perfect tool for removing and installing valve cores on a variety of automotive applications. With its easy-to-use design and high-quality performance, this valve core remover and installer is ideal for both professional mechanics and weekend warriors alike. Whether you're working on your car or truck, or just need a reliable tool for your automotive repairs, this Mastercool R134a valve core remover and installer is the perfect choice.