Series 3805 Carbide Flatted Shank Short Series End Mill - nano-A Coated - Metric 4 Flute nano-A Coated - AlTiN-coating (Al-content between TiAlN and SuperA). Multilayer with nanostructured areas, blue-violet, high heat- and wear-resistance, very broad range of applications on carbide Guhring RF 100 VA High-performance Roughing End Mills are for Stainless Steels, they excel at machining these metals thanks to unequal helix angles which considerably reduces vibration. The uneven helix angle vastly improves surface quality for finishing operations and a considerably higher feed rate for slot drilling and roughing operations are also achieved. With many applications, the complete milling process can be covered with one RF 100, which as well as increasing tool life and dimensional accuracy of the work piece generates a considerable cost advantage. Other advantages of RF 100 VA Endmills are: Suitable for roughing and finishing. Up to 60% higher feed rates. Up to 4-times longer tool life.