Made From Feature Premium Grade High Speed Steel. Numbered Drill Bits. General Purpose Drilling In Wood, Metal And Plastic. Wire Gauge Brite Drill Bits.
Cobalt Drill Bit 13Pc Set 1/16" To 1/4" By 64Ths. 12X Life Rating, Comparison To The Average 118 Degree Point High Speed Steel Drill.Cobalt Drills Are Designed To Cut Through Extremely Hard Metals, Including Stainless Steel. Aerospace Naps 907-J Specifications.