COBALT Jobber Twist Drill Bit Sets (503 series)

  • All drill bit sets come with a heavy duty metal index case. Store drill bits with an ease of mind
  • Industrial grade drill bit made for professionals. Precision grounded from solid construction
  • Perfect for drilling in hard metal such as stainless steel, wood, and plastic
  • Heavy duty, heat-treated High Speed Steel material for extended bit life and the best cutting performance
  • COBALT finish adds an extra protective layer to make the bit drill faster and last longer than black and gold jobber drill bits
  • 135° Split Point tip eliminates “wobbling/walking” by self starting and self centering the drill bit to not require center punch holes
  • SPIRAL flutes allows for efficient heat, debris, and chip removal
  • Round straight shank on diameters 11/64″ and under. 3 Flats shank on diameters 3/16″ and up

Industrial grade COBALT jobber twist drill bit is perfect for heavy duty drilling in wood, plastic, hard metal, composites, and etc. 135° split point eliminates a pilot hole and prevents walking/wobbling. Cobalt steel and spiral flutes create fast cuts and makes the drill bit last longer. Magbit carries different types of drill sets.

Part NO. NO. of Pieces Sizes Included UPC NUMBER 722170-
503.1300S 13 1/16″ to 1/4″ by the 64ths 50330
503.2100S 21 1/16″ to 1/4″ by the 64ths and 9/32″ to 1/2″ by the 32nds 50331
503.2900S 29 1/16″ to 1/2″ by the 64ths 50332
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