COBALT Step Drill Bit

COBALT Step Drill Bit

  • Perfect for drilling and enlarging different sized holes without changing the drill bit. Use one single bit for multiple holes
  • Ideal for creating burr-free holes in hard metal, plastic, copper, wood, aluminum, and carbon fiber
  • Industrial Quality for professionals
  • Heat-treated, M35 COBALT steel body material
  • COBALT steel adds extra hardness and wear resistance to make the drill bit last longer and drill faster than HSS step drill bits
  • Chamfered steps allow the user to slowly progress through multiple sizes and drill up to the desired size step by step for greater accuracy
  • Self-centering 135° split point tip prevents “wobbling” by eliminating center punch holes and starting instantly on contact
  • Double flute design ensures quick chip removal, removes heat for a “cooler drilling operation”, and extends bit life
  • Carded packaging available which is perfect for distributors and resellers

Part Number Drill Size Range No. of Steps Shank Size
CSB-1012 1/4″ to 1-3/8″ 5 STEP 3/8″ HEX
CSB-1238 3/16″ to 7/8″ 12 STEP 1/4″ Quick Change
CSB-1314 1/8″ to 1/2″ 13 STEP 1/4″ Quick Change
CSB-338 1/4″ to 1-1/8″ 3 STEP 3/8″ HEX
CSB-614 3/16″ to 1/2″ 6 STEP 1/4″ Quick Change
CSB-838 9/16″ to 1″ 8 STEP 3/8″ HEX
CSB-938 1/4″ to 3/4″ 9 STEP 1/4″ Quick Change