La Bella .050 Silver Wound Bass String, Single String

Q: Is this string for guitar or lute...?
The description above is confusion, it says "La Bella .050 Silver Wound Bass String, Single Classical Guitar Lute String".
I am looking for a 7th string for my classical guitar, just wanted to be sure this is indeed for classical guitar, cause a lute is shorter in length than a classical guitar.
Thank you very much.