The Pinnacle HHS Steel Drill Bits 25 Piece Set is a comprehensive collection of high-speed steel (HSS) drill bits designed for versatility and durability in drilling various materials. HSS drill bits are known for their hardness, heat resistance, and ability to cut through metals, wood, plastics, and other materials efficiently. This set typically includes a range of drill bit sizes, from small diameters suitable for precision drilling to larger sizes for more substantial tasks. The Pinnacle HHS Steel Drill Bits Set is commonly used in workshops, construction sites, and DIY projects for drilling holes with precision and reliability.