The IRWIN 373001 3/8" Hex Shank Hole Saw Mandrel is built with tough and durable materials to ensure long-lasting performance. It is compatible with 3/8" and 1/2" drill chucks, providing versatile use for various drilling tasks. Featuring a removable pilot drill, this mandrel allows for quick and easy replacement, enhancing convenience during your projects. Perfect for professionals and DIY enthusiasts alike, this tool is designed to deliver reliable results every time. Upgrade your toolkit with this essential mandrel today!