The Dormer Pramet C346 12.0 mm HSS-E long-series slot drill is designed for precise shoulder and slot milling in free-machining steel and copper alloys, offering reliable reach and consistency for demanding workshops.

• Diameter: 12.0 mm
• Flutes: 3-flute design for smooth cutting and effective chip removal
• Length of cut: 53 mm
• Overall length: 110 mm
• Shank: Flatted Weldon shank, 12 mm
• Material: HSS-E (cobalt-based) with a bright finish for enhanced wear resistance
• Helix and rake: 30° helix with 12° rake angle for controlled cutting action
• Standard: DIN 844 L
• Applications: Shoulder milling and slot milling in free-machining steel and copper alloys

Equipped with a cobalt-based HSS-E composition and a flatted 12 mm shank, this long-series drill delivers durability and secure seating in challenging materials. The 3-flute geometry and 30° helix promote efficient material removal and a clean finish, while the 53 mm length of cut enables deeper slots and extended reach without sacrificing rigidity. Ideal for engineers and machinists working with free-machining steel and copper alloys, it helps maintain consistent dimensions and reliable performance across demanding milling tasks.