Self-adjusting insulation stripper for single-core, multi-core, and fine-stranded conductors with plastic or rubber insulation. It automatically adapts to the respective cable cross-section and prevents damage to the conductor. The cutting depth can be adjusted for different insulation materials. It features a smoothly functioning mechanism, easily replaceable stripping blades and clamping jaws, as well as a lightweight design. The capacity includes semicircles, squares in square millimeters, square drives, stepped squares, triangles, and clamping widths for hexagonal, round, and square shapes.