The Timco Roll Forged Jobber Drills Set is a high-quality set of 25 drilling bits made from durable HSS steel. Designed for use with drills, these bits range in size from 1.0mm to 13.0mm, making them suitable for a variety of drilling tasks. With a straight shank design, these bits are perfect for DIY enthusiasts and professionals alike, providing precision and efficiency when working on various projects.