The Dormer Pramet C70 12.0mm x 3mm HSS-E Flatted Shank Corner Rounding Cutter is a compact, high-precision tool designed for accurate corner radii during chamfer milling. Built for durability in tough metals, it’s ideal for professionals who need reliable edge rounding in tight spaces.

• Diameter: 12.0 mm
• Corner radius: 3.0 mm profile radius for consistent, clean corners
• Overall length: 60 mm for extended reach in confined areas
• Flute count: 4 flutes for stable cutting and efficient chip evacuation
• Shank: Flatted 12 mm shank designed for robust clamping and repeatable positioning
• Material and finish: HSS‑E (cobalt-based) with a bright finish for enhanced wear resistance and durability
• Typical use: Optimized for chamfer milling and edge rounding across a range of materials including steel, stainless steel, cast iron, wrought and cast aluminum, copper alloys, and high‑temperature alloys

With its extra-short series design, this cutter minimizes tool overhang to improve rigidity and precision in challenging pockets or tight workpieces. The combination of a 12 mm shank, 4-flute geometry, and a cobalt-based HSS‑E substrate delivers long-lasting edge retention and repeatable corner radii, helping you reduce secondary finishing and improve part quality across production runs.