Set / Russian Guitar 7-string Strings for 7-string classical guitar normal tension- for Russian tuning (D-G-b-d-g-b'-d') suitable for 65-66 cm scales manufactured from BioNylon gut colored bass strings with New Nylgut multifilament core and silver-plated copper winding broad tonal range short stretching phase maintain stable tuning made in Italy Aquila are proud to introduce the Bionylon®, the first eco-friendly synthetic string in the world. (...)  

Set / Russian Guitar 7-string d' h g d H G D D1, H2 plain Nylon G3, D4, H5, G6, D7 (1,26 mm) Silverplated wound on Nylon silk Scale length 64-66 cm Tension ca. 7,0 kg PYRAMID strings of quality, are made of the finest materials with greatest precision and by expert hands, reliable, perfect and true.  

Set / Classical Guitar 7-string e' h g d A EH Trebles: E1 plain Nylon 0,70 mm H2(B) plain Nylon 0,90 mm G3 plain Nylon 1,05 mm Basses: D4, A5, E6,H7(B 1,34 mm) Silver-plated wound on Nylon silk Tension (kg): E1 6,9 / H2 5,2 / G3 5,5 / D4 7,3 / A5 7,2 / E6 6,7 / H7 6,3 The additional (...)