With the success with the GPX™ classical guitar strings, Oasis decided to use their experience with fluorocarbon monofilament to create a series of ukulele strings. Working with a leading ukulele internet forum they developed two basic sets: bright (UKE 8000 series) or warm (UKE 8100 series). Both sets are available with either a high or low G string (4th string). The high G string is the same fluorocarbon material used on the other three strings. The low G (4th) has a nylon core with a round wire wrap made of silver plated copper. This is the same material used to create the Sustenuto™ classical guitar bass strings. The low G plays an octave below the high G. The first thing you will notice about Oasis Fluorocarbon Ukulele strings is their length (63”). This length is at least twice as long as the length needed to string a concert, soprano or tenor ukulele. It is recommended that before using the string you cut the string in half with scissors. Use one section immediately and put one length of the string back in the envelope for future use. If you happen to have a low G set, the low G (4th) has two individual 39” lengths of the wound string in one envelope. Do not cut these strings before use.