IRWIN 5-PIECE MULTI-MATERIAL DRILL BIT SET
Bits drill through brick, block, tile, -metal, wood, plastic & all at same timeDesigned for rotary drilling but are tough -enough to be used with hammer drillsCarbide tip has unique diamond-ground, -four-facet design with shaper cutting edgesDouble-milled flute for fast dust removalCompatible with 3/8" and 1/2" drills