Drill bit AWTools AW42821 — metal/wood drilling, length unspecified, weight 71 g

AWTools AW42821 drill bit is a versatile rotary tool accessory designed for drilling a range of common construction and workshop materials. Made from 40CR alloy steel and fitted with a carbide tip, the bit combines toughness and cutting durability for repetitive use in handheld drills, drill presses, hammer drills and rotary hammers. The double spiral flute improves chip evacuation to reduce heat buildup during continuous drilling.

Advantages

The carbide-tipped cutting edges provide extended wear resistance compared with plain steel tips while the 40CR alloy steel body offers strength and impact resistance. A double spiral flute design promotes efficient removal of chips and dust, helping to maintain cutting performance and reduce friction. The grooved SDS+ shank secures the bit in compatible chucks to prevent slippage or accidental fall-out during hammering or heavy-duty drilling.

Suitable for

• Drilling into masonry, concrete and granite
• Working with natural stone and brick
• Cutting holes in ceramic tiles
• Maintenance, assembly and DIY tasks requiring hammer or rotary action

Key specifications

• Material: 40CR alloy steel body with carbide tip
• Cutting design: two cutting edges with carbide tip
• Flute type: double spiral flute for improved chip evacuation
• Shank type: grooved SDS+ shank for secure retention in compatible chucks
• Weight: 71 g
• Compatible tools: handheld drills, drill presses, hammer drills and rotary hammers

How to use

Select a drilling tool that accepts SDS+ shanks and secure the AWTools AW42821 bit in the chuck according to the tool manufacturer’s instructions. Mark the drilling point, start at low speed to position the tip, then increase speed and apply steady pressure. For masonry, concrete and stone, use the hammer or rotary action as required; for wood or metal, use rotary mode without hammering. Clear dust from the hole periodically to maintain cutting efficiency and avoid overheating. Wear appropriate personal protective equipment including eye protection, gloves and hearing protection when operating power tools.

Usage recommendations

Use the bit within the tool’s recommended speed and hammer settings; for hard stone or reinforced concrete, reduce feed pressure and allow the carbide tip to cut gradually. Replace the bit if the cutting edges become chipped or rounded to maintain safe and effective drilling performance.