The Dormer Pramet C123 13.0 mm slot drill is a precision two-flute tool designed for slot milling, shoulder milling, and ramping in steel and copper alloys. Built on a powder-metallurgical HSS-E core with a bright finish, it delivers reliable performance in standard DIN 844 K setups.

• Diameter: 13.0 mm
• Length of cut: 26 mm
• Overall length: 83 mm
• Reach (neck relief): 37.5 mm
• Shank: Weldon, 12 mm
• Material: HSS-E powder metallurgy with bright finish
• Flutes: 2
• Helix angle: 30°
• Rake angle: 12°
• Standard: DIN 844 K
• Applications: Shoulder milling, slot milling, and ramping in steel, cast steel, and copper/copper alloys

The tool’s powder-metallurgical HSS-E construction provides a tough, wear-resistant core that maintains a sharp edge under demanding milling conditions. The 2-flute geometry promotes efficient chip clearance and a clean slot, while the 30° helix enhances progressive cutting action for smoother entry and reduced torque during ramping. A 12° rake angle helps minimize built-up edge, improving finish quality on both slots and shoulders. The Weldon 12 mm shank ensures secure, concentric seating in standard collets and end-mill holders, supporting repeatable accuracy across multiple setups. Designed to DIN 844 K standards, this drill offers dependable interchangeability with common milling systems, making it a reliable choice for production environments working with steel, cast steel, and copper alloys.