The Kaplan Ball-End Adaptor allows any violin or viola string with a ball-end to be used with standard single hook-type fine tuners normally used for loop-end strings. The special design of the adaptor preserves the alignment of the string into the tuner. It is small and inconspicuous, and its gold-colored finish matches all styles of instrument fittings. Each package contains five adaptors. The Kaplan brand represents the highest quality in strings and accessories for bowed instruments., 5 adapters per package, Gold finish, Allows a ball-end string to be used with loop end hook-type fine tuners, Suitable for violin or viola, All D'Addario strings are designed, engineered and manufactured in the USA to the most stringent quality controls in the industry