The Dormer Pramet C70 12.0mm x 3.5 mm HSS-E Flatted Shank Corner Rounding Cutter is an extra-short series tool designed for precise corner rounding and chamfer milling in tight spaces. Built for a wide range of metals, this cutter delivers repeatable edge radii with dependable rigidity.

• Diameter: 12.0 mm
• Corner Radius: 3.5 mm
• Overall Length: 60 mm
• Flutes: 4
• Shank: Weldon, 12 mm
• Material: HSS-E (cobalt-based) with bright finish
• Geometry: optimized helix and rake for chamfer milling
• Standard: DORMER standard
• Applications: suitable for steel, stainless steel, cast iron, wrought and cast aluminium, copper or copper alloys, and high-temperature alloys

With its cobalt-based HSS-E substrate and robust Weldon shank, this cutter delivers durable performance across demanding materials. The four-flute design balances efficient material removal with a smooth edge finish, while the extra-short form enhances rigidity for precise control in confined pockets. The 3.5 mm corner radius provides a consistent edge profile, reducing the need for additional finishing passes. This tool is ideal for chamfer milling, deburring, and edge rounding on a variety of metals, helping you achieve accurate corner geometry and high-quality surface finishes in every part.