Step Bit - 1/4" to 1 3/8" (1/8" Increments)

This step bit drill accessory expands existing holes from 3/16" all the way to 7/8", advancing in tidy 1/16" steps. Requires a pilot hole be drilled before using. 

As robust as it is adaptive, it cuts through a variety of materials, delivering precise holes at every step.

Specifications:

• Drills 1/4" to 1 3/8"
• 1/8" Increments
• Pilot hole required