[12-PCS CONCRETE DRILL BIT SET] Cement drill with premium tungsten steel canneasily beused for glass, ceramic, tile, mirror, plant pots, wood, marble, thin iron plate, plastic, paver on concrete or brick wall pavers, etc

[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

[CARBIDE CROSS DRILL BIT] Profession Industrial strength cross head bits designed to provide maximum cutting power and accuracy, sharp durability.Cool with water and control speed while drilling

1/4" Hexagonal handle can reduce slip when drilling into hard surface, safer to use.It is suitable for normal power drills, hand drills, and bench drills

[INSTRUCTIONS FOR USE] For drilling harder materials like ceramic tile, marble, glass, and granite that require water, gradually apply increasing pressure while maintaining an inclined-to-perpendicular drilling angle