Comprehensive A/C Maintenance Kit: This set includes 270 high-quality O-Rings in 18 sizes and 40 valve cores, perfectly equipped to handle a wide range of auto air conditioning repair needs. The O-Rings feature excellent elasticity, high temperature, oil, and wear resistance suitable for cars, water pumps, and appliances. & Versatile Valve Cores: Get 40pcs of corrosion-resistant, impact-resistant, and waterproof A/C valve cores that performance and reliability. These are made to meet the rigorous standards of most automotive A/C system maintenance and replacement, making this kit ideal for professional mechanics and DIY enthusiasts alike. Premium Valve Core Remover Tool: Enhance your A/C work with the included tool designed for quick and efficient removal and installation of valve cores. This essential tool is robust and easy to use, ensuring a smooth workflow for maintenance tasks. Extensive Application Range: Utilize this kit for a diverse array of projects beyond just car air