6139-7109 Spring Bars

[earthphase]

Hello guys. Hoping for some help.

What diameter and tip size is best for this case?

Thank you.

[ouroboros]

I've used bog standard 1.8mm diameter bars as that's what the Z050S accepts. I'm not sure of the tip size but I do round off the edge in the tips to reduce the risk of marking the case when changing the bracelets.
It would be ideal to get OEM ones but they are rare as hen's teeth and there's more to the hobby than chasing spring bars.