Bosch EXPERT HEX-9 Multi-Construction TCT Drill Bit Set - 7 Piece

The primary advantage is its ability to drill accurately into a wide variety of materials, from hard concrete and granite to softer wood and metal, with a single bit, saving time and the need to switch tools.

Yes, it is compatible with most standard drills, hammer drills, and impact drivers that have a 3-jaw chuck or a ¼" internal hex tool holder.

You can drill into granite, concrete, brick, soft tile, wood, metal, and plastic.

Use impact mode for drilling into concrete and stone. For all other materials such as brick, tile, wood, metal, and plastic, use the standard rotary mode.

The Centering Geometry, combined with the sharp tip, ensures the bit starts drilling precisely where you want it, preventing skidding and improving accuracy, especially on hard surfaces.

Clean the bit with a dry cloth after each use, store it in a dry place, and avoid overheating by using appropriate speeds and pressures. Inspect for wear and replace if significantly damaged.

TCT stands for Tungsten Carbide Tipped. This indicates that the cutting edges of the drill bit are tipped with a very hard tungsten carbide alloy, which provides durability and cutting power, especially in hard materials.

Ensure the bit's tip is centered and apply steady, firm pressure. Verify you are using the correct mode (impact for concrete/stone, rotary for others) and that the material is suitable for the bit.

Check if the correct drill mode is selected. For concrete/stone, ensure impact mode is active. For other materials, use rotary mode. Clear any accumulated debris from the hole. Ensure the drill is set to an appropriate speed and sufficient power.

Reduce drilling speed and apply less pressure. Allow the bit and material to cool periodically. Ensure debris is being cleared from the hole effectively, as this can trap heat.

Ensure you are using a chuck or holder designed for hex shanks (3-jaw chuck or ¼" internal hex). Clean both the bit shank and the interior of the chuck. Tighten the chuck firmly around the shank.