DeWalt DW5204 4-Piece Premium Percussion Masonry Drill Bit Set
DeWalt Premium Carbide Percussion Hammer bits are used primarily for drilling small diameter holes in masonry, concrete, rock, and artificial stone. These bits are used primarily to drill holes for mechanical anchors and fit into standard 3/8-inch and 1/2-inch chucks. The four piece set includes: 3/16" x 3, 1/4" x 4, 5/16" x 6, 3/8" x 6.