High-speed steel jobbers-length drill bit blanks are the most common choice for creating custom drill bits for a wide range of drilling applications. High-speed steel provides good resiliency in a wide range of materials. Also known as drill rods, drill bit blanks can also be used to check the size of a drilled hole or to create gauges, drifts, punches, rollers, locating pins, spindles, and knockout pins. These sets contain multiple blanks in a range of sizes.