Featuring 3, 4, 5, and 6mm allen keys, this tool is perfect for professional use in the shop and portable enough for any rider to carry on the go.

The double-headed hex bit wrench has been redesigned to a cross position, allowing for continuous work without interfering with the frame, chainrings, or other components, and features the same  streamline, contoured design as Runwell's original STEX tool.

 ⓘ 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.