Juego de brocas de hormigón y mampostería de 12 piezas, brocas de cemento para ladrillo de hormigón...
12-PCS MASONRY DRILL BIT SET: Consistss of 7 different sizes :1/8", 5/32", 3/16", 3/16", 1/4", 1/4", 1/4", 1/4", 5/16", 5/16", 3/8", 1/2", that will help in drilling by starting with smallest bit and continuing to size needed.