Walter Surface Technologies Triumph® ThunderBit® Heavy-Duty T17HD+ Metal Index Jobber Drill Bit Set, 29 No. of Pieces, High Speed Steel (99505)

Triumph® ThunderBit® Heavy-Duty T17HD+ Metal Index Jobber Drill Bit SetUnique spiral flute design improves chip ejection and coolant flow to the pointThe heavy-duty core guarantees increased strength and reduced breakage135° self-centering split point prevents “walking" and provides quick penetrationFriction-reducting black & bronze oxide surface treatments for higher drilling speedsIncludes: 1/16" - 1/2" Jobber length drill bits