The Alpen Granite Drill Bit Set (5 Piece) Includes Drill Bits In Sizes 4Mm, 5Mm, 6Mm, 8Mm, And 10Mm, Specifically Designed For Drilling Into Hard Materials Like Granite, Ceramic, And Masonry. Each Bit Is Crafted From High-Quality Materials, Ensuring Durability And Longevity Even In Tough Drilling Conditions. The Specialized Tip Design Provides Efficient Cutting And Minimizes Chipping, Allowing For Clean And Precise Holes. This Set Is Perfect For Both Professional Contractors And Diy Enthusiasts Looking To Tackle Stone Or Tile Projects. With These Bits, Users Can Achieve Reliable Performance And Excellent Results In Their Drilling Tasks.