I use this. https://www.amazon.com/Thomastik-Infeld-AC112-Acoustic-Guitar-Strings/dp/B00162VV7W?SubscriptionId=AKIAIKOHFALUJCKC3KXQ&tag=bpyahoo-desk-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00162VV7W&m=A34VCPZVL7E6XQ