ITC Carbide End Mill Square Edge 4121 - 4 Flute 30° Helix With Facet Relief & Diamond Coating - Composites - 16mm

The ITC Carbide End Mill Square Edge 4121 is a high-performance cutting tool engineered for precision machining of composite materials. With a 16mm diameter, its 4-flute design and 30° helix provide robust cutting stability, while facet relief and a diamond coating help maintain sharpness and extend tool life. The square-edge geometry delivers clean, accurate pockets and slots in tough composite laminates.

This end mill is ideal for professionals and shops that demand reliability and consistent results when working with composites. Whether machining fiber-reinforced plastics, carbon fiber-reinforced composites, or other reinforced materials, the 4121 is built to deliver precise cuts with reduced chatter and fewer tool changes.

• Diamond coating for extended tool life: The diamond coating resists wear from abrasive composites, helping the edge stay sharp longer and reducing replacement frequency for demanding production runs.
• Facet relief with 30° helix for stable cuts: This geometry minimizes rubbing and heat buildup, enhances chip evacuation, and delivers smoother, more consistent finishes on tough materials.
• 4-flute square-edge design for efficient material removal: The balanced flute count and rigid geometry enable higher feed rates with reliable, vibration-free performance in composites, improving productivity and part quality.

Designed for professionals who value precision, durability, and repeatable results, the ITC 4121 helps streamline composite milling workflows. Expect cleaner surfaces, longer tool life, and fewer interruptions due to wear, enabling you to finish projects faster with confidence.