Bosch Drill Bit Set - EXPERT HEX-9 Multi Construction

These bits are designed for concrete, masonry, metal, wood, and plastic. For glass, specialized glass drilling bits are recommended to prevent breakage.

Rotary mode spins the bit to cut material. Impact mode adds a hammering action, which is highly effective for breaking up hard materials like concrete and stone. For softer materials like wood or metal, rotary mode is sufficient and prevents damage.

After use, wipe the bits clean with a dry cloth or a soft brush to remove dust and debris. For stubborn residue, a slightly damp cloth can be used, followed by immediate drying.

The set includes seven pieces: 4 x 45 x 90 mm, 5 x 50 x 100 mm, 6 x 60 x 100 mm (x2), 8 x 50 x 100 mm, 10 x 90 x 150 mm, and 12 x 90 x 150 mm.

Yes, the high precision and durable construction make them suitable for precision engineering tasks and metalworking applications.

Yes, these bits can be used effectively with any standard rotary drill. The impact function is an optional enhancement for specific hard materials.

Ensure the hex shank is fully inserted and the chuck is tightened securely. If using a standard 3-jaw chuck, ensure it's gripping the hex shank firmly. Consider using a drill with a dedicated hex collet chuck for maximum security.

Verify that the drill is set to impact (hammer) mode. Ensure the bit is not clogged with debris. Apply steady, consistent pressure.

Reduce drilling pressure and speed. Allow the bit to cool periodically. Ensure you are using the correct drilling mode for the material. For metal, consider using a lubricant.

Ensure the bit's centering geometry is clean. Mark the starting point clearly. Apply gentle pressure initially until the centering geometry engages the material.