Diapason gut strings are extra long Beef gut strings that are made for special use on instruments like Archlutes, Theorbos, Lautenwercke Harpsichords, etc. with a standard length of 90", (228 cm).
The gut is twisted in one direction for a medium to high twist, depending on the gauge. Thicker strings have a higher twist. The gut is processed to be flexable and responsive.