For DIY mechanics and pros tackling oil pressure switch replacements, this Minho socket is a must-have. It's specifically designed to remove and install most 1-1/16 inch oil pressure switches that are up to 2-5/8 inches long. The socket is compatible with a standard 3/8-inch drive ratchet or wrench, and it also works with a 1-1/8 inch hex key for added versatility. Made from tough chrome molybdenum steel with a black oxide finish, it's super hard, resists wear and corrosion, and won't easily deform or break under pressure. The hexagonal drive design provides excellent grip and prevents slipping, making your job safer and easier. Replacing a faulty oil pressure switch is crucial for maintaining proper engine oil pressure and preventing damage, and this tool helps you do it right. The package includes one socket. At Minho, customer satisfaction is our top priority—if you have any questions before or after buying, just contact us and we'll respond fast. A reliable, durable tool for your automotive repair kit.