I have been using this set in the industry for a year. This set works well with a variety of pens. While these extractors aren't indestructible, I have yet to break one. These are solid steel extractors with no plastic parts, designed to extract thin sheet steel metal pins from a plastic connector. In my opinion, the negative feedback about extractors breaking may have more to do with the user applying excessive force, losing control of direction and causing the extractor to twist, bend and break.