Dormer Pramet C122 18.0mm HSS-E PLAIN Shank 2 Flute Extra Long Series Slot Drill is designed for deep-slotting and shoulder milling in metalworking environments. This long-series end mill targets professionals working with free machining steel and copper alloys, offering extended reach and reliable performance in challenging slots.

• Diameter: 18 mm
• Length of cut: 65 mm
• Overall length: 150 mm
• Reach (with neck relief): 76.5 mm
• Shank: 16 mm plain shank
• Flutes: 2
• Material: HSS‑E cobalt-based steel with bright finish
• Helix angle: 30°
• Rake angle: 12°
• Application: Shoulder milling and slot milling in free machining steel and copper or copper alloys
• Standard: Dormer standard

The 30° helix and 12° rake are optimized for smooth chip formation and reduced burrs when cutting softer metals, while the cobalt-based HSS‑E composition provides improved hardness and wear resistance at elevated temperatures. The extra-long design with neck relief minimizes rubbing and vibration, enabling cleaner slots and longer tool life in deep-pocket work. This drill is well-suited for machine shops, fabrication environments, and maintenance tasks that require precise, reliable deep-slotting without frequent tool changes.