- Material and durability: 40Cr carbon steel body with YG8C tungsten carbide tips provide outstanding hardness and durability for chiseling and drilling in masonry. Suitable for bricks, concrete, stones, and other masonry construction materials. - Set contents: 13 drill bits, 1 point chisel, 2 flat chisels, 1 U-groove chisel. A variety of sizes to meet different drilling and chiseling needs. - Efficient design: U-shaped flute design enables fast removal of drilling dust and debris, increasing speed and helping prevent clogging during operation. - Compatibility: Fully compatible with most brands of SDS Plus rotary hammers, enabling easy interchange and broad applicability. - Performance and versatility: Combines strong steel construction with carbide tips to deliver reliable performance in masonry drilling and chiseling tasks, with long service life. - Practical use scenarios: - Drilling anchor holes in concrete walls or floors for mounting shelves, cabinets, or hardware. - Chiseling channels or grooves in masonry for wiring, conduit, or plumbing installations. - Removing damaged or unwanted masonry material to create openings or clears for upgrades.