5/16″ (Mill) X 5/16″ (Shank) X 13/16″ (Flute Length) X 2-1/2″ (Overall Length) 2 Flute Single End AlTiN Coated Drill Point Mill ~ 90 degree point. ~ Submicron grain solid carbide. ~ AlTiN coating is beneficial in wet, semi-dry to dry cutting of most steels and highly abrasive materials. ~ This coating provides good thermal stability for increased speeds and feeds that offers excellent heat resistance, good lubricity, better finishes and prolongs tool life. ~ This is a 5 tools in one item for slotting, NC milling, profile milling and chamfering (internally & externally).