A high-precision corner rounding cutter from Dormer Pramet, designed for reliable chamfer milling and edge rounding in a range of metals. This extra-short series tool delivers consistent radii and clean cuts, ideal for production environments and toolrooms that need compact, rigid performance.

• Diameter: 21 mm
• Overall Length: 70 mm
• Corner Radius: 6 mm
• Flutes: 4
• Shank: Weldon, 16 mm
• Material / Coating: Cobalt-based HSS‑E with bright finish
• Helix / Rake Angles: Optimised for efficient chamfer milling
• Standards: Dormer standard
• Applications: Chamfer milling and edge rounding in steel, cast steel, stainless steel, cast iron, wrought aluminium, copper and copper alloys, and high-temperature alloys

This cutter combines a robust HSS‑E substrate with a precise, four-flute geometry to deliver repeatable corner radii across varied materials. The extra-short form minimizes tool flex and vibration, helping you achieve consistent edge rounding on every pass. The 16 mm Weldon shank provides solid clamping and reliability in standard milling setups, while the cobalt-based alloy extends tool life when working with tougher alloys. Suitable for automotive, aerospace, machinery, and general fabrication workflows where a clean, accurate corner radius matters.