
The Irwin 25 x 380/300mm auger bit is the extended-length option for deep, clean 25mm holes in timber and nail-embedded wood. The self-pulling thread feeds the bit into the material while the spiral 'LEWIS' groove clears chips for efficient drilling at depth.
The peripheral cutting edge keeps holes clean with minimal spalling, while the extra length suits beams, posts and stacked timbers. Combine with other diameters to make up an Irwin auger drill bit set for large service holes and joinery.
The Irwin 25 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, featuring a self-pulling thread that ensures accuracy. Its spiral groove shape, known as 'LEWIS', facilitates maximum chip transport and enhances drilling efficiency. The peripheral cutting edge is designed to create clean holes with minimal spalling. This auger accommodates both cylindrical and hexagonal shank chucks.
It drills a 25mm 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.

