The Dormer Pramet C11 1/2 Inch HSS-E powder-metallurgical slot drill is built for precision shoulder milling, slot milling, and ramping in free-machining steel and copper alloys. Its extra-short geometry delivers rigidity in tight spaces, while a powder-metallurgical HSS-E core provides dependable wear resistance and long tool life.

• Diameter: 1/2" (12.7 mm)
• Flutes: 2-flute design for efficient cutting and stable chip control
• Length of cut: 16 mm
• Overall length: 73 mm
• Reach with neck relief: 27.5 mm
• Shank: 12 mm Weldon flat shank for secure mounting
• Material and finish: HSS-E powder-metallurgical construction with bright finish
• Helix and rake: 30° helix with 12° rake angle optimized for shoulder milling, slot milling, and ramping
• Standard: DIN 327 D compliance

The tool’s 30° helix and 12° rake angle are tuned to deliver clean, precise cuts in shielded pockets and slots, reducing workpiece chatter and finishing without excessive finishing passes. The extra-short design minimizes overhang, increasing rigidity during shallow-depth milling and improving hole or slot accuracy in tight fixtures. With the 12 mm Weldon flat shank, it seats securely in compatible tool holders for repeatable performance across a variety of milling operations. Ideal for production environments that require reliable slotting, shoulder milling, and ramping in free-machining steel and copper alloys, this slot drill supports consistent results, reduced setup time, and longer tool life.