Designed for slot milling in free‑machining steel and copper alloys, the Dormer Pramet C135 16.0mm HSS‑E slot drill delivers dependable, precise cuts in a compact, standard‑length tool. With a 16 mm Weldon shank and cobalt‑based HSS‑E, this drill blends durability with precise geometry for reliable pocketing and slotting work.

• Diameter: 16.0 mm
• Length of cut: 32 mm
• Overall length: 123 mm
• Reach with neck relief: 74.5 mm
• Shank: Weldon, 16 mm
• Material: HSS‑E (cobalt‑based) with bright finish
• Flutes: 2
• Helix angle: 30°
• Rake angle: 12°
• Standard: DORMER standard slot drill for steel and copper alloys

The two‑flute design promotes efficient chip evacuation and stable cutting in narrow slots, while the cobalt‑based HSS‑E composition extends tool life under higher temperatures typical of slotting. The 30° helix facilitates smooth cutting action and clean slots, and the 12° rake angle helps reduce friction and built‑up edge during aggressive milling. Neck relief supports deeper slots without rubbing, enabling consistent tool performance across the full reach.