The D'addario NB1253 Nickel Bronze acoustic guitar strings, here in light gauge 12-53, are a revolutionary new type of string that boasts unrivalled clarity, projection, strength and longevity. These strings will delivery an outstanding tone and will bring out your guitar's unique sound.With D'addario's NY Steel cores they have excellent tuning stability and have a high break resistance making them extra strong and able to last that much longer. The Nickel-plated Phosphor Bronze combination allows your guitar to sing with extra body and rich, detailed harmonics.This light gauge is perfect if you like a big, full sound from your acoustic. These strings provide a big, balanced tone with lots of low end and crystal high end. Excellent for strumming and open tunings. String thicknesses: 12, 16, 24, 32, 42, 53.ÿThese are well worth a go if you've not tried them yet, you'll be amazed at the sound you achieve! Some of the best uncoated strings on the market!