Fangrui Product Details 5-piece Set: The Counter Sink Drill Bit For Wood Includes 5 Hss Drill Bits Tapered Bits Tackles Drilling Needs With Popular Sizes (3/16inchx1/2inch, 1/8inchx3/8inch, 11/64inchx1/2inch, 5/32inchx3/8inch, And 9/64inchx3/8inch) For Both A Secure Grip And A Universal Compatibility With Most Drills;the Multiple Bits Of Different Sizes W/ Drill Stop Provides Project Flexibility Fast Easy Woodworking: The Quick-release Hex Shank Design Enables Effortless Bit For Drilling And Screwdriving, It Is Very Easy To Attach And Detach So You Can Countersink And Drill Quickly , Eliminating The Need For Additional Tools And Streamlining The Process Into A Single Efficient Step And Saving You Valuable Time And Boosting Your Efficiency Depth Adjustable: The Countersink Drill Bits Depth Are Easy To Adjust With Settings For Drill Depth And Countersink Depth; The Added Plastics Collar Can Reduce Marring Effectively And Sturdy: The M2 Hss Pilot Drill Bits With Spiral Chip Flute, Rapid Cutting; Steel Alloy Cutting Edges Create