The package includes 10 SDS Plus drill bits. These bits are made of tungsten steel alloy and are compatible with SDS Plus electric hammers. They are ideal for drilling walls, concrete, red brick, foam brick, stone, and building decoration. The bits come in different sizes and lengths to suit your needs. Their U-shaped design with 4 channels allows for efficient dust removal and extended lifespan. The 4-edge geometric head shape prevents jamming and breakage for optimal results. Additionally, the centering tip guides the drill from the start, avoiding shifts that could cause errors in the hole diameter. These bits are compatible with all SDS Plus hammer drills.