Product Information: EJ65S is a string set for soprano ukulele, utilizing Pro-Art Nylon trebles. Pro-Art Custom Extruded Nylon sets the standard in terms of ukulele tone, intonation, and dynamic response. Each Custom Extruded Nylon sets are manufactured on D’Addario own advanced monofilament extrusion line built exclusively for the production of musical instrument strings. Number Of Strings: 4 Product Features: Optimized for Soprano Ukuleles tuned to traditional ADF#B tuning Pro-Art Custom Extruded Nylon for highly accurate, laser sorted treble strings Soprano Ukulele, Pro-Art Custom Extruded Clear Nylon, Non-Ball End Made in the U.S.A. for the highest quality and performance Environmentally friendly, corrosion resistant packaging for strings that are always fresh For more information and specifications, please refer to the manufacturer’s website