Irwin Wood Auger Drill Bit

The Irwin IRW10502757 is a 16mm diameter auger drill bit with a 191mm overall length, perfectly sized for larger construction fixings, substantial cable runs, and heavy-duty joinery applications. This popular diameter is widely used for major coach screws, larger bolts, and anywhere significant clearance or through-holes are required in structural timber work. Designed for all general wood boring, this auger bit offers superior performance in robust applications. The single spur cutting edge scribes the circumference of the hole for a smoother quality finish, ideal for both structural and finish carpentry, whilst the hexagon shank prevents slipping in drill chucks or bit extensions even under the substantial torque generated by larger diameter drilling. The solid centre provides extra rigidity whilst boring, particularly important with larger diameter bits where maintaining straightness is critical. The self-feeding screw point provides faster boring in both soft and hard woods, making repetitive large-hole drilling far more efficient, and the fully hardened body from tip to shank provides extra durability under the demanding forces of large-diameter boring operations.