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IRWIN Drill Bit Set, M35 Cobalt Alloy Steel Steel, 29-Piece (3018002) - Metal Cutting Drill Bits - Amazon.com
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1/16"-1/2"x64ths Piece Cobalt Drill Bit Set, 3/8" Shank, Qualtech | DWD29JX3/8-CO-SET | DrillsandCutters.com
1/2"-1"x64ths 33 Piece Cobalt Reduced Shank Drill Bit Set, Drill America | D/A833SD-CO-SET | DrillsandCutters.com
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CaRoller Drill Bit Set 13-Piece, M35 Cobalt Metal Drill Bits Durable Round Shank Drill Sets for Steel Wood Plastic Sheet Metal - Amazon.com
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COMOWARE Cobalt Drill Bit Set- 29Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic with Metal Indexed Storage Case, 1/16"-1/2" - Amazon.com
1 - #60 Cobalt Steel Jobber Drill Bit Set, 60 Pieces, Drill America | D/A60J-CO-SET | DrillsandCutters.com
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