Warchal Nefrit Violin set has metal core E and A strings, while the D and G are synthetic core. These strings work especially well for instruments that require more intense bow pressure, and are ideal for electric instruments too.
A good string makes playing well less work. With Warchal strings the music is allowed to flow more freely than any other brand I've played. The Nefrit line is an economical and dependable string that needs little break in time. Because of this Warchal Nefrit it is perfect for my demanding playing schedule.