Form-fit stripping of both standard and difficult-to-remove insulating materials made of PTFE, silicone, Radox®, Kapton® and rubber including multi-layer insulations. A second pair of blades hold the remaining insulation reliably in place. Replaceable shaped blade adapted precisely to the respective conductor diameter. Includes length stop for consistent stripping length during repetitive work. Pliers body is made of steel. Blade is made of special tool steel, oil-hardened.