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With the Knipex 12 69 21 spare blade set, you quickly restore the clean, accurate stripping performance of your 12 62 180 automatic wire stripper. Dull edges can snag or fray insulation, but this replacement pair ensures smooth stripping across single, multiple, and fine-stranded conductors from 0.2 to 6.0 mm². Crafted from oil-hardened special tool steel, these blades maintain long-lasting sharpness while keeping internal copper strands completely undamaged. Easily fitted to your tool, this two-piece set extends the lifespan of your stripper and keeps you working efficiently during daily wiring and control panel assembly.