A few turns of the crank of this compact tool produces a clean slit through armored casing. Simply untwist to strip! This operation takes only a few seconds. It is absolutely safe and does not damage the wires inside due to the unique built-in depth of cut stop, no need to finagle with an adjustment screw! The Roto-Split® spells the end to nicked fingers and cut knees. The open channel construction pioneered by Seatek allows cutting in the middle of a roll.