Electric guitar strings. Gibson Brite Wire reinforced electric guitar strings are a durable string designed for high performance playing. Using a specially formulated high-carbon hex-shaped steel core wire, these strings provide greater strength than any other string. A precision winding process ensures that your nickel-plated wound strings have a crisp attack and high output volume. An added benefit of using the high-strength core wire is the incredible amount of sustain that these strings will add to your guitar.