Formula 65 Guitar Polish and Cleaner (2 oz.) Fretboard 65 Ultimate Lemon Oil (2 oz.) Ultraglide 65 String Cleaner and Conditioner (2 oz.) Dunlop peg winder 2 Dunlop polish cloths. Dunlop Formula 65 has become the standard daily-use guitar-care product line for pro guitar techs, repair shops, and guitarists worldwide. Dunlop Formula 65 Guitar Polish and Cleaner creates a genuine, no-residue shine in a hurry, with the proper chemical balance to preserve any finish. Fretboard 65 Ultimate Lemon Oil is the perfect complement as it cleans away fingerboard grime and returns your fretboard to its original luster. Ultraglide 65 String Cleaner and Conditioner shields strings from tarnish and corrosion, extending playing life.