The Dormer Pramet C306 11.0 mm slot drill is an extra-short, 3-flute cutter designed for precise slot and shoulder milling in restricted spaces. Built for free-machining steels and copper alloys, it combines a robust Weldon shank with a powder-metallurgical HSS-E core for dependable performance.

• Diameter: 11.0 mm
• Length of cut: 13 mm
• Overall length: 70 mm
• Shank: 12 mm Weldon (DIN 327 D)
• Flutes: 3
• Material & finish: HSS-E, powder-metallurgical with bright finish
• Helix angle: 30°
• Rake angle: 12°
• Standard: DIN 327 D
• Applications: Shoulder milling, slot milling, ramping
• Material compatibility: Free-machining and plain carbon steel, copper and copper alloys

In practice, this combination delivers precise, clean pockets with reliable chip flow and extended tool life when working in challenging materials. The short body minimizes deflection and enhances stability in tight access areas, while the 3-flute geometry provides efficient chips evacuation during slot milling. The 30° helix and 12° rake angle optimize cutting action for smooth entry and finished surfaces in both steels and copper alloys. With a DIN 327 D Weldon shank, it clamps securely for consistent performance across multiple passes.