Oliv are the world's consummate gut cored string. For many decades these strings have been the choice of many of the world's leading soloists and professional players. The wide range of gauge and cover options mean it's possible to achieve the absolute best from any instrument. These strings appeal mainly to players of the highest ability looking for a string with they which can 'customise' the sound of their instrument. They can significantly improve the sound of an already good instrument. However due to the delicate nature of this type of string construction the life expectancy of these strings is inexact and their tonal stability is inferior to a metal cored string. As with all gut cored strings they are not recommended for use in fine tuners due to their elasticity.