Drills are often needed to create holes for numerous reasons. And one of the best tools for this job are the 3pcs HSS Titanium Coated Step Drill Bit. These drill bits work at a faster speed, saving you a lot of time while working. Perfect for any DIY projects, constructions, and home improvements.WORKS ON DIFFERENT MATERIALSYou can use these to drill holes to any materials. Work on plastic, woods, and most metals, including steel, brass, aluminum, and copper.PERFECT FIT SHANKSThe shanks are small enough that they should fit any standard size chuck such as that on a small drill press or hand-held drill.MADE OF HIGH-GRADE MATERIALThe drill bits are made of drop forged, heat treated and fully polish classic high-speed steel with Titanium coating for proven capability and durability.COMES IN DIFFERENT SIZESComes in three sizes: 4-12mm with 5 steps, 4-20mm with 9 steps and 3-12mm with 10 steps. This takes the guessing out of drilling by supplying the proper depth for you.Product Specifications:Package includes : (3) Pcs Step Drill BitMaterial: Titanium coated HSSSizes : 4-12mm - 4, 6, 8, 10, 12mm4-20mm - 4, 6, 8, 10, 12, 14, 16, 18, 20mm3-12mm - 3, 4, 5, 6, 7, 8, 9, 10, 11, 12mm