Single string / Violoncello 4/4 a-1 Medium 0,78mm/18,5kpSteel/Chrome steel woundThe Jargarcello A-string "Superior" is a further development of cello A "Special". The volume and power has been much more increased and so has thewarmth and brilliance. It'sideal for solo performing, but fororchestra playingas well if you want your cello to produce a greater sound. The diameter of the ASuperiormedium string is about 0,78 mm; the forte string is a little thicker, the dolce string a litte thinner.All Jagar cello strings - A, D, G ,C - have a special, flexible steel core andare wound with thin threads of metal - aluminium, copper and different alloys.