ITC Carbide End Mill Square Edge 4121 - 4 Flute 30° Helix With Facet Relief & Diamond Coating - Composites - 5mm

The ITC Carbide End Mill Square Edge 4121 is a 5 mm diameter carbide tool engineered for machining composite materials with high precision. It’s designed for professionals and serious hobbyists who need clean pockets, slots, and profiles in CFRP, fiberglass, and other composites, delivering consistent results with each pass.
Featuring a 4-flute design, a 30° helix, facet relief, and a diamond coating, this end mill combines rigidity, efficient chip evacuation, and exceptional wear resistance to extend tool life and reduce downtime.

• 4‑Flute design with square edge: The four flutes provide rigidity and efficient material removal, delivering stable cuts and precise edge quality on composites while minimizing chatter and deflection.
• 30° helix with facet relief: Optimized helix angle and facet relief reduce cutting forces, prevent delamination in composite layers, and promote clean, accurate edges with reliable chip control.
• Diamond coating for extended tool life: The diamond coating enhances wear resistance and heat tolerance, delivering longer tool life and consistent performance in demanding composite machining, with less frequent re-sharpening.

This combination delivers reliable performance across high-precision composite applications, helping you streamline workflows, shorten cycle times, and achieve repeatable, high-quality finishes from start to finish. Built for professionals who value consistency, durability, and productive machining sessions, the 4121 supports confident use in modern fabrication environments.