All these types are made in standard tension (3.4 Kg average for each string).

Treble strings are made with a newly discovered high-performance bioplastic called Sugar. Wound strings are made of an an-allergic red copper winding (except for the third strings of the Arabic and Turkish sets, and for the fourth strings of the Iraqi set, that are wound with a special grey coloured metal blend) with low noisiness under the left hand’s fingers.