5 Piece Fast Spiral Masonry Set Sandblasted finish, fast spiral design rapidly removes debris for improved performance in conventional cordless or electric drills. Precision electronically brazed, special grade tungsten carbide tips. For use in brick, concrete, stone, marble, tile, plaster, and other masonry materials. Set includes: 1/8″, 1/4″, 5/16″, 3/8″, and 1/2″
