PhD Baritone Ukulele Strings - Low D is a set of high density PVDF strings for baritone ukulele, tuned D-G-B-E with a low D for the deep, low baritone sound. PVDF is denser than nylon for more volume and sustain. Specifications SKU UC-PHD-BLD Instrument Baritone ukulele Material PVDF, a polymer of higher molecular weight and density than nylon Development Scientifically optimized by Jason Arimoto, PhD Endorsement Daniel Ho, six-time Grammy Award-winning ukulele artist and producer Tuning D-G-B-E with Low D Common questions What are PhD Baritone Ukulele Strings - Low D made of? PhD Baritone Ukulele Strings - Low D are made of PVDF, a polymer of higher molecular weight and density than nylon, for more volume, sustain and playability than nylon. How are the PhD Baritone Ukulele Strings - Low D tuned? The PhD Baritone Ukulele Strings - Low D are tuned D-G-B-E with a low D, which matches the top four strings of a guitar. What instrument do the PhD Baritone Low D strings fit? The PhD Baritone Low D strings are made for baritone ukulele. Who designed the PhD Baritone Ukulele Strings - Low D? The PhD Baritone Ukulele Strings - Low D were scientifically optimized by Jason Arimoto, PhD, and are endorsed by six-time Grammy Award-winning ukulele artist and producer Daniel Ho.