The Dart SDSSET11 SDS-Plus Hammer Drill Bit 11 Piece Set is a versatile and durable set of drill bits designed for masonry work. Made from hardened SDS steel with tungsten carbide tips, these bits are suitable for use with both corded and cordless drills. The set includes a range of sizes from 5.5mm to 20mm in diameter, with lengths ranging from 100mm to 450mm, ensuring there is a bit suitable for a variety of projects. The SDS Plus shank type ensures secure fitting in the drill, making this set a valuable addition to any professional or DIY toolkit.