Tite-Fit roundwound nickel-plated electric guitar strings are designed to be great all-around strings. Based on a round core, the construction techniques for the Tite-Fit electrics are very old. However, the core wire and wrap wire in DRs are the latest, most advanced and expensive metals available. Use Tite-Fit strings for flexibility, tone, and long life. These guitar strings are available in a wide range of gauges and sound great for rock, blues, heavy metal, or jazz. Gauges 9-11-16-24-32-42.