Bosch EXPERT HEX-9 Multi Construction TCT Drill Bit - 10 x 150mm

This drill bit is designed for a wide range of materials including concrete, brick, soft tile, wood, granite, and metal. It can also be used on plastic.

Yes, it is compatible with impact drivers. Use impact mode for concrete and stone, and rotary mode for other materials like wood and metal.

The primary advantage is its multi-material capability, allowing you to drill accurately into various hard substances with a single bit, saving time and the need for multiple tool changes.

The centering geometry is a feature on the tip of the drill bit that helps it to stay in place upon contact with the material, providing a precise and accurate start to the drilling process without skidding.

Impact mode uses rapid hammering action, ideal for hard materials like concrete and stone. Rotary mode uses rotation only, suitable for softer materials like wood, plastic, and metal to prevent damage or over-penetration.

The scope of delivery is for the EXPERT HEX-9 Multi Construction Drill Bit, 10 x 90 x 150 mm (diameter x flute length x total length).

While designed for granite and concrete, extremely hard or abrasive natural stones may require specialized bits. However, for most common stone applications, this bit performs well.

Ensure the drill bit is fully and securely seated in the chuck. Check if the chuck itself is damaged or not functioning correctly. Verify that the drill bit shank is straight.

Confirm you are using the correct drill mode (impact vs. rotary) for the material. Ensure the drill bit is sharp and free from debris. Apply consistent pressure and avoid forcing the bit.

Reduce drilling pressure and allow the bit to cool periodically. Ensure you are using the appropriate speed setting on your drill for the material being drilled. For metal, consider using a lubricant.

Ensure the centering geometry is making firm contact before initiating drilling. Start at a lower speed to create a pilot indentation, then increase speed. Consider using a center punch to create a starting dimple.