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Drill Bit Set 115 Piece Cobalt

115 Piece Cobalt Drill Bit Set Each of these cobalt drill bits retain their hardness up to 1000° F, so they’re ideal for drilling cast...

#1-60 Cobalt Drill Set

#1-60 Cobalt Drill Set. Sizes: #1 – #60 (60 Sizes). Cobalt High Speed Steel. Recommended For Drilling High Tensile Materials Such As High-Strength Alloy Steels,...