Drill Bit GEKO M14 25 mm 7159985 for concrete and masonry

Core Drill Bit GEKO M14 25 mm 7159985 is a diamond-coated dry drilling bit designed for use with angle grinders that accept an M14 shank. With an outer diameter of 25 mm and a 10 mm diamond layer, it is intended for creating holes in hard ceramic and masonry materials such as porcelain sanitary ware, ceramic tiles, klinker and glazed surfaces.

Advantages

The diamond coating ensures accurate, long-lasting cutting performance on hard surfaces while dry drilling avoids the need for water supply. The M14 threaded shank provides compatibility with most angle grinders and the 25 mm diameter offers a compact solution for small-to-medium hole requirements. The 10 mm diamond layer adds durability when working with abrasive ceramic and glazed materials.

Suitable for (tasks / use cases)

• Drilling holes in porcelain sanitary ware and ceramic fixtures
• Creating openings in ceramic wall and floor tiles
• Punching holes in klinker and glazed masonry surfaces
• Installation tasks requiring precise small-diameter holes (25 mm)

Key specifications

• Brand: GEKO
• Model / MPN: 7159985
• EAN: 5901477159985
• Shank: M14 (threaded) suitable for angle grinders
• Outer diameter: 25 mm
• Diamond coating thickness: 10 mm
• Intended use: dry drilling in ceramic, porcelain, klinker and glazed materials

How to use

Secure the drill bit in an angle grinder with an M14 thread and clamp it according to the tool manufacturer's instructions. Mark the hole position on the workpiece, start drilling at low speed to create a guide, then increase speed while applying steady, moderate pressure. Keep the bit aligned perpendicular to the surface and avoid lateral forces. Since this is a dry diamond core bit, do not use water cooling; pause periodically to allow the bit to cool if drilling extended holes or hard materials.

Usage recommendations

Use appropriate personal protective equipment (safety glasses, dust mask and hearing protection). For best results on very hard or thick materials, drill in short intervals to prevent overheating. Verify compatibility of the M14 shank with your angle grinder before use.