Milwaukee 48-20-7490 5 Piece 44 Magnum™ series Carbide SDS Plus Drill Bit SetOffers a unique multi-faceted carbide insert reducing the breakage possibility when drilling through re-bar and mesh The distinctive chisel shaped tip breaks concrete quickly for faster penetration The four fluted spiral shaft has improved dust removal resulting in less bending stresses 3/16" Diameter Drill Bit 1/4" Diameter Drill Bit 5/16" Diameter Drill Bit 3/8" Diameter Drill Bit 1/2" Diameter Drill Bit