Item #: DRILSETC
29PC COBALT DRILL BIT SET 1/16-1/2 BY 64THS
Set of Cobalt drill bits ranging from 1/16" to 1/2" in diameter in 64th (imperial inch) increments, with a straight shank and a 135° split point. Heavy duty construction made to NAS Type J aircraft specifications. Used for drilling holes in hard, tough materials such as stainless steel, titanium high temperature and high strength alloys. High red hardness of cobalt permits speeds 30% greater than HSS drills.