The Dormer Pramet C123 25.0 mm slot drill is a rugged, two-flute HSS-E cutting tool designed for precise slot milling, shoulder milling, and ramping in steel, cast steel, and copper alloys. Featuring powder-metallurgical HSS-E with a bright finish, this standard-length drill delivers reliable performance in a compact, DIN 844 K-compatible package.

• Diameter: 25.0 mm
• Flutes: 2 flutes for efficient chip evacuation and stable cutting
• Length of cut: 45 mm
• Overall length: 121 mm
• Reach with neck relief: 64.5 mm
• Shank: Weldon-type, 25 mm
• Material: Powder-metallurgical HSS-E with bright finish
• Helix angle: 30° for balanced cutting action and smooth chip flow
• Rake angle: 12° to enhance shearing in shoulder and slot milling
• Standards: DIN 844 K compliant
• Applications: shoulder milling, slot milling, and ramping in steel, cast steel, and copper/copper alloys

Designed to deliver consistent performance in production and repair environments, the C123 combines toughness and wear resistance with a sharp, bright finish that supports clean cuts and easy chip removal. The 30° helix reduces cutting forces and vibrations, while the 12° rake angle helps achieve efficient material shearing during slot and shoulder milling. The Weldon shank ensures secure clamping in standard tool holders, minimizing runout for better accuracy. With a 45 mm length of cut and 64.5 mm reach, this drill handles deeper slots and pockets without needing a tool change, boosting productivity. The DIN 844 K specification guarantees compatibility with existing machinery and tooling ecosystems, making this a dependable choice for frequent slot and shoulder milling tasks in a range of metallic workpieces.