Drill bit set Bosch Expert 2 608 900 597

The Bosch Expert 2 608 900 597 drill bit set contains five carbide-tipped bits designed for drilling through hard and brittle materials such as glass, roofing tile, soft tile, stone and ceramic tile. Sizes included cover a useful range from 4.0 mm up to 10.0 mm to accommodate common fixing and installation tasks. The set is intended to provide clean, accurate holes with reduced chipping and extended life compared with standard HSS bits when used on fragile surfaces.

Advantages

The bits feature a reinforced tip geometry and a carbide composition that improve wear resistance and maintain cutting performance in abrasive materials. Their geometry helps centre the bit on smooth surfaces to reduce slippage and minimise break-out at the exit side of the hole. The set’s range of sizes allows matching bit diameter to anchor, plug or screw dimensions for a precise fit. Designed for use with standard drill chucks, the bits offer consistent hole quality when used at recommended speeds and pressures.

Suitable for

• Drilling holes in glass for fixtures and fittings
• Creating openings in roofing tile and soft tile for fasteners
• Making precise holes in stone and ceramic tile during renovation
• Preparing anchor points for anchors, screws and plugs

Key specifications

• Quantity: 5 drill bits
• Material of tip: carbide
• Suitable materials: glass, roofing tile, soft tile, stone, ceramic tile
• Diameter range: 4.0 mm, 5.0 mm, 6.0 mm, 8.0 mm, 10.0 mm
• Shank type: round, compatible with standard drill chucks

How to use

Mark the drilling position and secure the workpiece to prevent movement. Start drilling at a low speed without hammer action, applying light steady pressure to allow the carbide tip to score the surface. Once the bit has established a seating point, increase speed moderately while maintaining consistent pressure. For larger diameters, withdraw the bit periodically to clear debris and avoid overheating. Finish the hole with controlled pressure to reduce exit chipping on the backside of brittle materials.

Usage recommendations

Use a drip of water or intermittent cooling for prolonged drilling in tile or stone to extend bit life; avoid high impact or hammer settings and do not force the bit through brittle materials. Wear appropriate eye protection and gloves when drilling glass or ceramic surfaces.