Designed with your safety in mind, this all metal tool is capable of stripping wire from 1/8" to 1-3/16". The blade is adjustable from the rear of the tool with a simple turn of the knob and can be adjusted up to 1/4" in depth. Strip the wire circumference and then rotate the tool 90 degrees and pull the tool in a longitudinal direction removing the remaining sheathing. Comes with a spare blade in the handle.