DRILLCO - 5/16 4 FLUTE DOUBLE END END-MILL 3/8 SHA - 55A120A

The multi-flute end mill has a better finishing capability than a 2-flute end mill. At any given instance, at least one and often two of the teeth are solidly in the cut. The cutting action is smoother than that of the 2-flute end mill, with less chatter.
Made with premium grade HSS to last longer
Center cutting tip for plunging, pocketing and holemaking
Multiple flutes (4 or 6) produce a better surface finish and less chatter
Bright finish for added lubricity
Double ended for 2x the life
Made in USA