Multilayer safety dip-insulation according to IEC 60900, burnished, multifunctional tool for cutting and stripping NYM/ NM-B wire 3 x 1,5 mm2 to 5 x 2,5 mm2, cutting and stripping with low strain, clean, smooth and little deformation cut, safe centering of cable due to V-shaped cutting area, compact design and safety opening spring for fast and comfortable working, with safety lock.