To strip rough edges from your workpiece's holes, go for this Dormer reamer bit. The tool's six spiral flutes quickly even out drilled sides, ensuring delicate parts easily slide into place. Thanks to its heat-resistant HSS construction, the component shrugs off wear from intense cutting. Support for steel, cast iron and non-ferrous metals means you don't need to switch tools for different jobs. As it handles feed rates up to 59m/min, the bit speeds through long metalworking tasks.

• Flute length of 44mm to create deep drill holes
• Straight shank for easy fitting to power tools
• Steam oxide-treated to prevent loading on cutting edges

• Aerospace engineering
• Stock removal
• Engine assembly

Reaming increases the size of a drill hole. To balance this out, you should drill a starting hole that's slightly smaller than you need.

ISO/BS328/DIN206B