Drill bit AWTools AW42812 — standard twist drill bit for general use

AWTools AW42812 — standard twist drill bit for general use made of 40CR alloy steel with a carbide tip. This drill bit combines a two-cutting-edge geometry and a double spiral flute to provide efficient drilling and reliable chip evacuation. The grooved SDS+ shank secures the bit in hammer drills and rotary hammers, while the carbide tip improves cutting performance and wear resistance when working with hard materials.

Advantages

The AWTools AW42812 features a carbide tip for enhanced hardness and longer life compared with plain-steel tips. Its two-cutting-edge design delivers stable, accurate drilling and reduces wandering at startup. The double spiral flute clears debris effectively, lowering friction and helping to prevent overheating during extended use. The grooved SDS+ shank ensures secure retention in compatible hammer drills and rotary hammers, reducing the risk of slippage under impact conditions.

Suitable for

• Drilling holes in masonry and concrete
• Working with granite and natural stone
• Installing fixtures in brick and ceramic tiles
• General-purpose construction, repair and maintenance tasks

Key specifications

• Material: 40CR alloy steel body with carbide tip
• Cut geometry: two cutting edges
• Flute: double spiral flute for chip evacuation
• Shank type: grooved SDS+ shank for secure retention
• Intended use: masonry, concrete, granite, natural stone, brick, ceramic tiles
• Compatible tools: hammer drills and rotary hammers

How to use

Fit the AWTools AW42812 into a compatible hammer drill or rotary hammer with an SDS+ chuck; ensure the shank is fully engaged and locked. Select the hammer or rotary mode appropriate for the material and set drill speed according to the workpiece: lower speeds for hard stone and higher speeds for softer masonry where recommended by the tool manufacturer. Apply steady axial pressure without forcing the bit; allow the carbide tip and cutting edges to remove material. Periodically withdraw the bit to clear accumulated dust and debris from the hole and flutes, which helps maintain drilling efficiency and prevents overheating.

Usage recommendations

Use personal protective equipment including eye protection and a dust mask when drilling masonry or stone. For best results in ceramic tile, start with a low speed and light pressure to avoid cracking the tile surface, then progress into the substrate. Replace the bit if the carbide tip is chipped or wear significantly reduces cutting performance.