Milwaukee Retractable Starter Pilot Bit is designed to provide accurate centering in less time when cutting tile, stone, and glass. This innovative retractable starter bit allows you to cut clean, precise holes faster, especially when used with Diamond Plus™ threaded hole saws. Diamond Plus™ hole saws are known for their -in-class performance and the lowest cost per hole on the market, boasting up to 10 times longer life. The highly durable retractable starter bit eliminates the need for pilot holes and features a 1/4 inch size that fits standard hole saw arbors. Enhance your productivity and efficiency when working with hard, abrasive materials by pairing this starter bit with Diamond Plus™ threaded hole saws. Model Number: 49-56-8025