Type: Roundwound Material: 24K Gold Plated Thickness: 045/065/085/105 Developed and handmade in Germany from the best materials and designed for the highest sound demands. This series reflects the 75 year tradition in string production. The result is a premium quality string that is unparalleled. All strings are coated with real 24 carat gold and therefore completely resistant to tarnishing or corrosion, their durability is up to three times higher than normal strings and are suitable for nickel allergy sufferers.