Bringing together a tin-plated hexagonal steel core string with a bronze alloy wrap of 80% copper and 20% zinc, the Ernie Ball 2006 Earthwood 80/20 Bronze Extra Light Acoustic Guitar Strings elicits the most mellifluous of tone from your guitar. The lightest gauge in the family at .010 to .050, these are excellent strummers and a great choice for children who have trouble with heavier gauges.