Bosch 1 in. Edge™ Impact Tough™ Hole Saw delivers twice the lifespan d to standard impact-rated hole saws, making it a durable and reliable choice for your cutting needs. Designed with 8-TPI Bi-Metal teeth, this hole saw ensures clean and fast cuts in sheet metal, optimized for high-torque impact drivers. Its impact-rated 1/4-inch hex shank broad compatibility with most drills and impactors, while the integrated one-piece design eliminates the need for a separate arbor or pilot bit. Additional features include a depth stop to prevent breakthrough and provide precise hole depth, as well as a pilot bit spring for automatic plug ejection, enhancing efficiency and accuracy during use. Model Number: HTW1