These Kodiak Cutting Tools® micro four flute carbide end milling cutters feature a 30 helix angle and are center cutting for plunging, slotting and profiling.055 Carbide Endmill 4 Flute Micro Square End ALTIN Coated It is exceptional in difficultto machine materials where adhesive wear is particularly high.0005, -. This coating is extremely heatresistant and can be used with or without coolant.