- The SUPERIA PRO range of professional classical guitar strings consists of high-precision nylon treble strings and bass strings made of silver-plated copper wire on nylon multifilament.
- Superia Pro CL4 Black n' Silver normal tension
- Version with ball for easy winding
- treble strings black Nylon bare
- Bass strings silver-plated copper wire on nylon multifilament
- Thicknesses in "/mm: E1 .028/0.71, H/B2 .032/0.81, G3 .040/1.02, D4 .030w/0.76, A5 .036w/0.91, E6 .045w /1.14