Optima Mandolin 3050.L Soloist Flatwound Polished Strings 10-30, Set

A: Hello Nancy,
In theory these Optima strings are appropriate for your mandolin however the gauges are enough smaller that intonation issues and/or buzzing problems could arise. If you think you want to change to lighter gauge strings it would be best to consult with a luthier first; this set is essentially an ultra-light gauge set so it will draw considerably less tension than the strings you are currently using.

D'Addario Light gauge sets would be a step down from what you are currently using but not as a drastic a gauge change as the Optimas; perhaps that is an option you should consider first.

Cheers!

A: Hello Patrick ,
Optima states that the total tension for this set is approximately 23kg. They do not provide a string by string measurement.
As for the suitability of these strings for your vintage instrument we cannot accurately say. Your best option would be to have the instrument inspected by a qualified luthier to verify it's overall stability.

Cheers!

A: Hello Patrick ,
They are loop end although they are likely available as ball end if special ordered (an up-charge might be required).
If you are interested in a special order complete the info here-
stringsbymail.com/special-order-item-request-soi-5458.html

Cheers!