
The Irwin 12 x 380/300mm auger bit is the extended-length option for deep, clean 12mm holes in timber and nail-embedded wood. The self-pulling thread feeds the bit into the material while the spiral groove clears chips, so drilling stays fast even at depth.
The peripheral cutting edge keeps holes clean with minimal spalling, while the extra length suits beams, posts and stacked timbers. Add other diameters to build an Irwin auger drill bit set for cabling and plumbing work.
The Irwin 12 x 380/300mm Auger is a durable drill bit designed for accurate drilling in tough materials, including nail-embedded wood.
It is engineered for precision drilling with its self-pulling thread and spiral groove shape, which facilitates efficient chip transport and enhances drilling speed. This auger features a peripheral cutting edge that ensures clean holes with minimal spalling. It is compatible with both cylindrical and hexagonal shank chucks, making it versatile across drills.
It drills a 12mm diameter hole.
It has a 380mm overall length with a 300mm working length for deeper holes.
Yes. It is built for accurate drilling in tough timber, including nail-embedded wood.
The extended length lets you drill deeper and reach through thicker timber than a standard auger bit.
The spiral 'LEWIS' groove transports chips out of the hole for efficient drilling.

