Step drill bits, high speed steel. Century step drills are for cutting in ferrous and non-ferrous metals and plastics up to 1/8" thick. Double flute design reduces chatter and deburrs holes. Zirconium coating reduces ware for a longer tool life. 3-Flat shank reduces chuck slippage. Self-starting tip.

Product Features:

• Step drill, high speed steel. Are for cutting in ferrous and non-ferrous metals, plastics and wood up to 1/8" thick.
• High speed step drill for drilling and deburring holes in ferrous and non-ferrous metals plastics and wood up to 1/8-Inch thick
• Double flute design reduces chatter and deburrs holes
• Zirconium coating reduces wear for a longer tool life
• 12 steps in 1/16-inch increments #4
• Size 3/16-Inch to 7/8-Inch