Meet the Dormer Pramet C159 14.0 mm HSS-E slot drill — a precision 2-flute tool built for slot milling, shoulder milling, and ramping in non-ferrous metals. Designed for engineers and machinists who demand accuracy and durability in tight pockets and shoulders, it combines a robust cobalt-based HSS-E core with a compact, reliable geometry.

• Diameter: 14.0 mm
• Length of cut: 26 mm
• Overall length: 83 mm
• Reach / neck relief: 37.5 mm
• Shank: 12 mm Weldon; flatted shank
• Material: cobalt-based HSS-E with bright finish
• Helix angle: 40°
• Rake angle: 20°
• Flutes: 2
• Standard: DIN 844 K
• Applications: slot milling, shoulder milling, ramping in non-ferrous metals

This slot drill is purpose-built to deliver steady, efficient cutting in aluminum, brass, copper, and other non-ferrous alloys. The 40° helix promotes smooth chip formation and evacuation, while the 20° rake angle supports clean engagement in shoulder and ramping operations. With a 12 mm Weldon shank and a flatted shank design, it seats securely in compatible holders, reducing runout and enhancing precision. The DIN 844 K standard guarantees dependable compatibility with common tool holders, making this drill a reliable choice for everyday slotting and pocketing tasks in busy workshops.