Drill bit AWTools AW42904 — model AW42904, weight 1.61 kg

AWTools AW42904 drill bit (model AW42904) is a drilling accessory weighing 1.61 kg, engineered for use with compatible hammer drills and rotary impact hammer drills. Constructed from 40Cr alloy steel with a YG8C tungsten carbide head, the bit combines a durable body and a wear-resistant cutting tip. The 2-cutter spiral flute geometry evacuates material efficiently while the grooved SDS+ shank secures the bit in the chuck to reduce the risk of falling out during operation. This tool is intended for creating holes in masonry, concrete, granite, natural stone, brick and ceramic tiles.

Advantages

The combination of a 40Cr alloy steel body and a YG8C tungsten carbide head provides a balance of toughness and cutting-edge hardness, prolonging service life when drilling abrasive materials. The 2-cutter spiral design improves dust and spoil removal, lowering operating temperatures and reducing vibration compared with single-cutter profiles. The grooved SDS+ shank ensures secure retention in compatible drill systems, simplifying bit changes while maintaining axial and radial stability during hammering action.

Suitable for

• Drilling holes in concrete and reinforced concrete (with appropriate drill power)
• Creating openings in masonry and brick
• Drilling into granite and natural stone for anchoring or fixing
• Working with ceramic tiles for installation of fixtures and fittings
• Use with hammer drills and rotary impact hammer drills equipped with SDS+ chucks

Key specifications

• Material of body: 40Cr alloy steel
• Tip material: YG8C tungsten carbide
• Geometry: 2-cutter spiral flute
• Shank type: grooved SDS+
• Compatible tools: hammer drills and rotary impact hammer drills
• Intended materials: masonry, concrete, granite, natural stone, brick, ceramic tiles
• Weight: 1.61 kg

How to use

Select an appropriate drill and SDS+ chuck compatible with the AWTools AW42904. Mark and, where necessary, center-punch the drilling point on the workpiece. Insert the AW42904 into the drill chuck until it engages with the SDS+ grooves. Use the drill in hammer mode for concrete, masonry and stone; use rotary mode for situations that require reduced impact. Apply steady axial pressure without forcing the bit; allow the carbide tip to cut and the spiral flute to evacuate spoil. Periodically withdraw the bit to clear dust and prevent clogging, and avoid prolonged idling of the rotating bit in a hole to reduce heat buildup.

Usage recommendations

Wear appropriate personal protective equipment (safety glasses, dust mask, hearing protection and gloves) when drilling. Match drill speed and hammer impact settings to the workpiece material and use water or intermittent drilling where applicable on ceramic or natural stone to control dust and heat. Inspect the carbide tip before use and replace the bit if excessive wear or damage is present.