Oiled plain gut.
Pros: My first time buying new gut strings and these were a recommendation to practise. The strings are longer than required, I wasn't sure of this when I purchased them so it was nice to have the equivalent of two strings, helpful as mine have worn quickly.
Cons: So far I have no cons. Unfortunately my bridge snapped today, but it is a fairly old fiddle which I am trying to get going again. And I am a fairly redundant fiddler which I am also trying to get going again.
Other: Very useful information accompanied the product, with a clear instruction and image for replacing the strings. I've kept this in my case as a reminder, it's an nice little extra that is appreciate.
A good classic string.
Pros: It is a classic string used by Hurdy Gurdy players. Works well on most instruments. Good tone and stability. Recommended by the Hurdy Gurdy maker Mike Gilpin.
Cons: Sounds silly but it is gut. I really would prefer to use a non-gut string but the choice isn't really there.
Other: As always excellent service from the Stringzone. Can't rate them highly enough.