3/16"D x 4-1/2"L Masonry Drills for Concrete Screws

Installing masonry screws is easy when you use our extra long masonry bits! Precision ground carbide tips ensure that an oversize hole doesn’t reduce holding power. The 5/32", 3/16", and 15/64" bits fit tool holders designed for concrete anchor bits, and standard drill chucks; the 7/32" bits (for 1/4" screws in extra-hard masonry) only fit drill chucks designed for use with rotary hammer drills, and will not perform to satisfaction with standard drills.