Dormer Pramet A125 12.00 mm x 250 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

The Dormer Pramet A125 12.00 mm x 250 mm HSS ST Straight Shank Extra Long Series Drill BS 328 is engineered for serious metalworking tasks where depth and precision matter. This drill blends a robust 12 mm cutting diameter with an impressive 250 mm overall length, giving you the reach you need without compromising rigidity or control.

Key features that set this drill apart:

• 118-degree conventional point for fast, accurate starts and a strong, self-centering cut. The geometry is easy to re-grind, helping you extend the tool life between resharpening sessions.
• Steam oxide finish reduces material sticking at the cutting edge, improving chip clearance and reducing built-up edges when drilling ferrous and non-ferrous metals alike.
• Extra Long length series designed for drilling very deep holes or reaching into recessed workpieces and hard-to-access features. The straight shank ensures compatibility with a wide range of drilling machines and collet systems.
• Premium HSS material delivers reliable performance across a spectrum of materials, including steel, aluminium, and stainless steel. It balances toughness with heat resistance for cleaner holes and longer service life.
• Versatility across machines—suitable for use in drill presses, milling machines, and compatible handheld drills, making it a practical addition to any workshop toolbox.
• BS 328 compliance and precise dimensional control ensure consistent hole sizes and repeatable results, essential for production work or precise fabrication tasks.

The A125 drill is ideal for workshops that regularly encounter deep cavities, blind holes, or through-holes where standard-length drills fall short. It excels in fabrication shops, automotive maintenance, metal fabrication, and DIY setups where reliability and reach are non-negotiable.

Why choose this drill over alternatives? Its combination of a long reach, grindable edge, and oxide-assisted performance translates to fewer tool changes, smoother hole starts, and cleaner drilling in a variety of metals. When you need to push through thicker materials or reach into recessed features without compromising accuracy, the Dormer Pramet A125 provides a dependable, consistent solution.

Practical tips for optimal results:

• Match speed and feed to the material: slower speeds with tougher steels, moderate speeds for aluminium, and careful feeds for stainless steel to maintain edge life.
• Use a light cutting fluid or oil to improve heat dissipation and extend edge life on difficult metals.
• Begin with a lightweight pilot hole if drilling particularly hard or thin-walled workpieces to ensure accurate starting guidance.
• Inspect the edge regularly; because the point is re-grindable, a sharp edge yields straighter holes and reduces exit burrs.