Sounds like you're in a bit of a fix with your K5 jig! Losing that small ball from the ratchet compartment can be quite a setback. To get the right replacement, you might want to check the manual or reach out to the manufacturer for the specific size you need. Alternatively, if you have a local hardware store nearby, they might be able to help you find the right one 1wins. Best of luck resolving the issue and getting your K5 jig back in action!