Extended Drill Range: Streamline your drilling experience with our assorted 5-PCS sets, offering you a broad step drill sizing. Cover up to a remarkable count of 47 different hole sizes with one set, which saves you the trouble and time consumed when changing drill bits. Build Quality: Witness superior grade construction fortified by high-speed steel plus a titanium coating for enhanced hardiness, reduced wear-out, and . Our split tip design is further shaped to a refined 118-degree X-angle for heightened sturdiness, contributing to the efficiency and lastingness of the drill bits. High-Proficiency Dual-Blade : Appreciate the smooth cutting of our dual-blade model, which comes in handy in material particle ejections. Not only does this lead to a tidier work , but it also ensures a more accurate drilling operation and improved overall performance. All-rounded Compatibility: Our drill bit sets are optimally designed for all tool types, and can be used with hand drills and bench drills