Irwin Speedblu Bit Extension 300mm – Flat Bit Adapter

The Irwin Speedblu Bit Extension 300mm extends the reach of flat auger bits, allowing you to drill deeper holes in timber and composite materials. Designed for bits 16mm and larger, this extension maintains the Speedblu groove design for reliable torque transfer and reduced wobble. Ideal for electricians, carpenters, and contractors who need to drill through thick joists, beams, or multi-layer materials.