Bosch 1-3/8 In. Thin-Wall Hole Saw features high-speed steel teeth designed for long-lasting durability and super-fast cutting action, especially effective in sheet metal. This hole saw is optimized for use with an impact driver to achieve faster cutting performance. It comes complete with a long-lasting high-speed steel pilot bit and an arbor assembly, making it a reliable choice for precision and efficiency in your projects. Model Number: