Yangoutool 5PCS Titanium Step Drill Bit Set with Automatic Center ...

Yangoutool 5PCS Titanium Step Drill Bit Set with Automatic Center Punch,Multiple Hole 50 Sizes Stepped Up Bits,High Speed Steel Drill Bits with Aluminum Case

• HSS Titanium Coating High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.
• 50 Size in 5 Bits The bits set includes five standard step drill bits that can replace 50 individual drill bits, you can process 50 different kinds of diameter holes with the five pieces.
• Easy Drilling Double cutting blades and X-type openings design ensure a faster, stable and smoother cutting; 3-sided shank design prevents slip in drill chuck providing with small pressure.
• Automatic Center Punch& Protective Aluminum Case The center punch help you mark the center point that you want to drill, with exquisite aluminum case protects the drill bits not easy to dull and prolongs the drills lifespan.
• Widely application The step drill bits can be used to chamfer, bur, and drill or enlarge holes. The step drill bits can work with stainless steel sheet, aluminum alloy, plastic material and wood.