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. Durable Build Quality: Witness superior grade construction fortified by high-speed steel plus a titanium coating for enhanced hardiness, reduced wear-out, and longevity. 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 Innovation: 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 surface, 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 among others. Whether you're working on 3mm steel, aluminum, insulating board, or PVC, our drill bits provide you with an exceptional multi-applicability. Practical Storage Solution: Each of our drill bit set is accompanied by a uniquely designed storage box, featuring a size index for easy classification. This functional provision prevents debris fall and helps in maintaining a well-organized workspace. Colour:gold Material:high speed steel Package Contents: 5 x Step Drill Bit 1 x Storage Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.