The ST-4 4-cutter SDS-Plus masonry drill bits. The ST4 4-cutter drill bits use an automated copper soldering process to adhere to the high-quality tungsten carbide tips, giving them added strength. This allows them to perform on tough applications such as concrete, bricks, blocks and natural stone.
• 4-cutter Design for longer life
• Powerful dust rejection, due to a specially engineered spiral design
• Ideal for resin anchors