The Dormer Pramet C139 12.0 mm HSS-E-Powder Metall TiCN-coated slot drill is built for precision slot milling, shoulder milling, and ramping in a range of free‑machining materials. Designed for shops that demand reliability and consistent results, this tool delivers steady performance across steel, cast iron, copper alloys, and titanium alloys.

• Diameter: 12.0 mm
• Flutes: 2-flute design for efficient chip evacuation and stable cutting
• Length of cut: 26 mm
• Overall length: 83 mm
• Reach with neck relief: 37.5 mm
• Shank: Weldon style, 12 mm
• Coating: TiCN coating on powder metallurgical HSS‑E for improved wear resistance
• Helix angle: 30°
• Rake angle: 12°
• Standard: DIN 844 K
• Applications: Slot milling, shoulder milling, and ramping
• Materials suited: Free‑machining plain carbon and alloy steels, cast iron, copper and copper alloys, titanium and titanium alloys

With its robust HSS‑E powder metallurgy core and TiCN coating, the C139 slot drill delivers enhanced wear resistance and longer tool life in demanding slot and shoulder milling tasks. The 30° helix promotes steady cutting action and efficient chip control, while the 12° rake angle supports stable plunging and ramping in a variety of workpiece geometries. The Weldon 12 mm shank ensures a secure, repeatable clamping interface for minimal runout and reliable performance in milling centers and CNC machines. The combination of short length of cut and generous reach makes it well-suited for shallow slots and pocketing where rigidity matters, without sacrificing versatility for deeper operations where the neck relief comes into play.