Fangrui Product Details 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 Among Others. Whethe