D'Addario EJ87B strings are designed specifically for baritone ukuleles. The 3rd and 4th string are a silver-plated copper wound on nylon complimented by a 1st and 2nd string which are made from our bright sounding titanium material. D'Addario Titanium Ukulele strings are crafted from a dense monofilament material that has an attractive, translucent purple hue and a polished, smooth feel similar to nylon. This unique material is particularly beneficial to Ukuleles due to its slightly brighter tone and increased projection, resulting in more volume, clarity and dynamics. This set is optimized for standard DGBE tuning.