Carbide tipped round shank masonry drills are engineered with wide fultes to provide fast dust removal in softer materials. Designed for drilling in brick, concrete and sandstone. Carbide tips brazed to tough steel bodies and are larger than the nominal drill size to provide clearance for installation of anchor screws, expansion shields and toggle bolts. Designed for use in portable electric drills. Set contains sizes: 3/16" - 1/2" x 6" Overall Length Sizes in Set: 3/16" x 6" 1/4" x 6" 5/16" x 6" 3/8" x 6" 1/2" x 6"