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