5 pcs SDS-PLUS Drill bit Set includes workable Sizes in 2 different Lengths for drilling the different hole sizes in masonry purposing -High-quality raw material, strong High Speed Steel SDS-PLUS rotary drill bit with 2 cutters Tungsten Carbide tip which ensures the High efficiency drilling in concrete -High-temperature brazed tungsten carbide tip with the special design for fast accurate functions and longer lifetime -Hardened process, provides ultimate combination of strength, heat & wear resistance