The DB SDS-PLUS FCH 4C 1/2X6X8 25PK from Freud America Diablo Tools is a premium set of drill bits designed for heavy-duty applications. Each bit measures 1/2 inch in diameter and 6 inches in length, making them ideal for drilling into concrete, masonry, and other tough materials. The SDS-Plus shank ensures quick and secure bit changes, compatible with most rotary hammers. These bits are engineered with a four-cutter design for efficient drilling and reduced vibration, enhancing user comfort. This 25-pack is perfect for contractors and professionals looking for reliable performance in demanding environments.