Keil is Germany's leading professional drill bit manufacturer.

The Keil, HARDTEC Hard Stone Drill Bit features an asymmetric spiral flute with a straight slot start for optimal dust removal during drilling, these drills feature a special grade of European carbide specifically designed for granite, slate, basalt, hard ceramic tiles, porcelain and other hard materials. The tips are high quality homogeneous fine grain European standard tungsten carbide fixed with high temperature soldering at 1,120 degrees centigrade, with a diamond ground 120-degree cutting angle for high-performance peace of mind. Wear-resistant high-speed drilling with very long service life, suitable for use in any chuck based impact or rotary drill system.