Carbide jobber-length drill bits provide excellent hardness, wear resistance, and heat resistance. They are harder than high-speed steel or cobalt jobber-length drill bits and require a rigid setup such as a fixed-spindle machine. The bits create precise holes with a smooth finish and often eliminate the need for reaming the hole after drilling. Jobber-length drill bits are the most commonly used drill-bit length. They provide a good balance of strength and accuracy when drilling into a variety of materials.