Replacement bit for Runwell STEX & STEX90 tools.

Available in 3mm/4mm and 5mm/6mm sizes.

 ⓘ If the bit becomes loose, use a 2.5mm allen wrench and tighten the set screw on the end of the tool that secures the bit. Adding a tiny drop of blue threadlocker will prevent the set screws from needing adjustment.