The Optima Protos violin string set is an economical choice for beginning violinists and is composed as follows:

- E string : Steel
- A, D and G string : Nickel core with polished winding

Available in sizes 4/4, 3/4,1/2, 1/4, 1/8 and 1/16.

Click here for the datasheet of Optima Protos violin strings.