Dunlop Manufacturing, Inc. was founded as a small, family-owned and operated company in 1965, and has since grown to be a leading manufacturer of electronic effects, picks, capos, slides, strings and other musical instrument accessories. The Dunlop System 65 range of products are designed to make care and maintenance of your instruments easy. A roadie/ instrument tech's dream, the System 65 Line includes every tool you could need to keep everything gig ready. The System 65 Fret Collar Kit is designed for quick and effective fret polishing.