The AL3-303 series standard length carbide end mill allows you to machine deeper parts, slots and walls in a single pass with minimal chatter and vibration. This series has various corner radii and thru coolant options for the best chip evacuation. This series can remove an amazing amount of material very quickly and will probably max out your machines potential. This tool is excellent for high speed machining. This series comes with polished flutes and Mirror Edge to eliminate chatter and vibration in high speed machining of aluminum and non-ferrous materials. This tool is best used on spindles under 20,000 RPM. You need to use flood coolant with this tool. The shank tolerance is the best in the industry H4 tolerance on all sizes and comes standard with Anti-pullout shank technology. This eliminates tools pulling out of tool holders.