Available in a variety of sizes, these Kennedy® screwdriver bits have a hardness of 58 - 62HRC. Manufactured from a high alloy chrome molybdenum steel, these bits can be used on hand and power tools. Features and Benefits • Manufactured from chrome molybdenum steel making for a durable product • Available in a host of sizes to suit varying requirements • Suited for use with hand and power tools for versatility Typical Applications • High Security Fixings