I always used the Large ones, no matter which guitar... I ordered those as a mistake, but ended up not returning them. The reason I use large ones even for regular 6 string guitar is cause they either kill your sustain and literally invade your first fret, or become useless when put in an actual good intended position. For real, use a sock or practice more how to be clean instead of buying this.... Again, when put where it works is just toomuch, and when put where is comfortable you better without it anyways hahahaha.... for real, use a sock instead of this, or use the large ones.... the radius of this sh*t is awful even for small guitars like les pauls