Tite-Fit round-wound nickel-plated electric guitar strings from DR are designed to be great all-around strings. They are handmade based on a round core. The core wire and wrap wire in DR’s are the latest in string technology . If you are looking for strings that are flexible for tone and long lasting, well this are the correct strings for you. If you play Rock & Roll, Blues, Heavy Metal, Jazz, Latin Music or what ever your style of music, this are amazing all-around strings.