Reaper Cobalt Drill Bits are constructed of a patented 8% cobalt and high-molybdenum alloy, which increases the drill bit strength, and allows for greater heat resistance when drilling the hardest and most demanding materials. Reaper Cobalt Drill bits feature a 135-degree split point eliminating the need for pilot hole predrilling or starter punching.

Our 135-degree split point Reaper cobalt drill bits are particularly successful in cutting holes in harder grades of stainless steel and other material higher up on the Rockwell chart. Our patented M42 alloy contains a higher cobalt percentage than the industry standard of 5-8 percent cobalt, rendering them super-friction-resistant and will cut more holes than most of our competitors, making the need to re-sharpen less frequent.

The Reaper Cobalt Letter Set includes sizes A to Z.