Engineered for precision slot work, the Dormer Pramet C305 25 mm HSS-E Primax slot drill is built for shoulder milling, slot milling, and ramping in a range of materials. This 25 mm, 3-flute tool combines robust powder-metallurgy HSS-E with a bright finish and a Weldon shank for dependable, repeatable performance.

• Diameter: 25 mm
• Length of Cut: 45 mm
• Overall Length: 121 mm
• Material and Finish: HSS-E powder metallurgy (Primax) with a bright finish
• Shank Type: Weldon, 25 mm
• Flutes: 3
• Helix Angle: 30°
• Rake Angle: 12°
• DIN Standard: DIN 844 K
• Applications: Shoulder milling, slot milling, and ramping in free-machining and plain carbon steel, copper and copper alloys, and Fe-, Ni-, and Co-based high-temperature alloys

This slot drill is designed to deliver reliable performance across standard milling tasks in diverse materials. The 30° helix and 12° rake optimize cutting action and chip evacuation, helping maintain a clean slot and smooth surface finish even in demanding alloys. The combination of powder-metallurgy HSS-E and Primax provides enhanced wear resistance and long tool life, making it well suited for production environments where consistent results and reduced tooling downtime matter.