Bosch EXPERT HEX-9 Multi Construction TCT Drill Bit - 6 x 150mm

This bit is designed for multi-material use, including concrete, brick, soft tile, wood, granite, and metal. It can also be used on plastic.

Yes, the EXPERT HEX-9 is suitable for use with impact drivers and rotary hammer drills, especially when drilling into concrete and stone (use impact mode). For other materials like wood or tile, use the rotary-only setting.

The centering geometry is a feature on the tip of the drill bit that helps it maintain its position on the material surface when you start drilling, preventing it from wandering or skidding.

The hex shank ensures a strong connection with the drill chuck and allows for maximum torque transmission, providing better control and power transfer compared to standard round shanks.

It offers up to 5x more precision than standard Bosch CYL-3 drill bits due to its advanced tip design and centering geometry, leading to more accurate hole placement.

Impact mode (hammer function) is best for hard materials like concrete and stone, providing percussive blows to break up the material. Rotary mode is for softer materials like wood, plastic, or tile, where spinning action is sufficient.

Clean the bit after each use, store it in a dry environment, and avoid overheating by using appropriate speeds and pressures. Inspect the tip for wear regularly.

Ensure your drill is set to 'hammer' or 'impact' mode. Verify the bit is securely seated in the chuck and that you are applying sufficient pressure.

Ensure the centering geometry is properly engaged with the surface. Try starting at a slower speed or creating a small pilot indentation with a center punch before drilling.

Reduce drilling speed and apply less pressure. Allow the bit and the material to cool down periodically. Ensure you are using the correct drill mode for the material.

Check if your drill chuck is compatible with a hex shank or if you are using the correct ¼" internal hex tool holder. Ensure the shank is fully inserted and tighten the chuck securely.