Multi Material drill bits are designed with a Tungsten Carbide tip with Cobalt to provide maximum hardness and heat resistance reducing wear during extreme cutting applications. Negative ground carbide tip bores through multiple materials clean and smoothly, without walking or wandering. Unique brazing process allows our multi material drill bits to withstand temperatures up to 1800 Degrees. One drill cuts it all. Designed for cutting in masonry, ceramic tile, concrete, brick, fiberglass, plexiglass, glass, cast metals, hardened steel, granite, marble, wood, plastic, stone, drywall, plaster and porcelains.