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WebBeHappy Cobalt Drill Bit Set 29Pcs, M35 High Speed Steel Drill Bit Set, Twist Jobber Drill Bit Set for Hardened Metal, Stainless Steel, Cast Iron, Wood, Plastic Index Storage … WebBlack-oxide drill bits produce less friction than uncoated drill bits. For technical drawings and 3-D models, click on a part number. Shank. Size: Decimal Size ... More wear resistant than cobalt steel and high-speed steel, these carbide-tipped bits maintain a sharper, harder edge at high temperatures for excellent performance on hard and ... come by for a visit

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Web3 — Durability. Black oxide drill bits have a hard exterior 2x more durable than a regular drill bit, so they last 50% longer. Few things are as durable as cobalt drill bits, which are … WebJul 2, 2004 · Black Oxide : Black Oxide : Titanium Drill Bit : Titanium Drill Bits : Model Number : CO14 : CO21 : BL21A : BL29 : TI21A : TI29 # of Pieces : 14 : 21 : 21 : 29 : 21 : 29 : Compare with similar items. This item BOSCH CO2137 5/32 In. x 3-1/8 In. Cobalt Drill Bit. DEWALT 5/32-Inch, Titanium Nitride Coated, Split Point Twist Drill Bit (DW1310) WebBOEN Cobalt Drill Bit Set - 13PCS M35 High Speed Steel Twist Jobber Length Drill Bits 1/16" - 1/4", Drill Bit for Hardened Metal, Stainless Steel, Cast Iron, Plastic and Wood, … come by my house