With a hardness of 58 - 62HRC, these hexagon screwdriver bits are ideal for most general purpose applications. Manufactured from a high alloy chrome molybdenum steel to ensure strength and longevity, each bit is ideal for use on both hand and power tools. Available in a varity of tip sizes to suit a range of uses. Features and Benefits Manufactured from chrome molybdenum steel for durability Can be used on both hand and power tools making for a versatile product Available with varying tip sizes to allow you to select the product that best suits your needs Typical Applications Ideal for use with hand and power tools in the following industries: Construction DIY Electrical Plumbing Automotive Engineering