Duncan bolt - Velikost M 20mm (střední)
If you managed to strip the threads or break axis you can very easily be replaced.
Axis will also come with a closing his mother at the end.
Small Axes S are suitable for example for: Flying Squirrel, Mosquito, Speed Beetle...
Middle Axes M are suitable for example for: Freehand Zero, Freehand, Throw Monkey, Hayabusa...
Price per piece.