GHS Acoustic Slide Guitar (dobro type) Phosphor Bronze Roundwound Phil Leadbetter Set, .016 - .056, PL1650star rating 5Terry DealFebruary 27, 2011I am very pleased with them. They are heavier than the Martin Resonators I have always used. They have a nice tone to them when you are single stringing them. I have a set on my Dobro Hound dog and on my Tricone. Love them !