If you're looking for a great sounding set of guitar strings, look no further than these Coated Light Guitar Strings from Monoprice!These strings are made of coated steel, for the E and B strings, while the larger strings are composed of an hexagonal core wrapped with coated nickel alloy wire. They include a rust-resistant coating and gold plated ball ends.Specifications:E - 1st Coated Steel .010 (0.25mm)B - 2nd Coated Steel .013 (0.33mm)G - 3rd Nickel Alloy Wound .017 (0.43mm)D - 4th Nickel Alloy Wound .026 (0.66mm)A - 5th Nickel Alloy Wound .036 (0.91mm)E - 6th Nickel Alloy Wound .046 (1.1mm)*** 30-day easy returns. No restocking fee. Free lifetime technical support. 1 year warranty. ***