Heavy Duty Pro Series High Speed Drill Set
29 Piece High Speed Steel M2 135 degree split point.
1/16" to 1/2" by 64ths.
Black and Gold Heavy-Duty premium drill bits.
Great drill bit for harder steels.
Machine ground and heat treated to stay sharp longer.
Not the cheapest but the best in it's class.
Comes in a HUOT Heavy-Duty Steel Index. USA