The Irwin IRW10502751 is a 13mm diameter auger drill bit with a 191mm overall length, offering a specialist size for specific engineering and construction fastener requirements. This diameter is particularly useful for certain bolt specifications, specialist fittings, and applications where precise hole sizing between standard diameters is required for optimal fastener performance. Engineered for all general wood boring, this auger bit delivers superior performance with its precision-engineered cutting diameter. The single spur cutting edge scribes the circumference of the hole for a smoother quality finish, ensuring specialist fasteners and fittings achieve proper seating and holding power, whilst the hexagon shank prevents slipping in drill chucks or bit extensions. The solid centre provides extra rigidity whilst boring, maintaining accuracy for precision-critical applications. The self-feeding screw point provides faster boring in both soft and hard woods without compromising dimensional accuracy, and the fully hardened body from tip to shank provides extra durability for professional trade environments. Features and Benefits: • 13mm diameter perfect for specialist fastener and fitting applications • 191mm length suitable for standard construction tasks • Single spur cutting edge ensures precise, clean holes • Hexagon shank delivers reliable drive under load • Self-feeding design speeds up precision boring work • Fully hardened construction ensures professional-grade durability Specifications: Diameter (mm): 13 Overall Length (mm): 191 Working Length (mm): 114 Pack Qty.: 1