Make sure you follow the most up-to-date sterilization and Instrument cleaning rules. Prevent working with acidic liquid disinfectants and switch to PH neutral disinfectants. Acid in general has a tendency to be reactive towards metal, Instrument cutting edges constructed with Tungsten Carbide possess weak properties when in contact with acid, https://www.ortix.co.uk/product/aligner-hole-punch-pliers/