Set / Alto Guitar 6-string B-E-A-D-F#-B Trebles: Clear nylon Basses: Nylon-multifilament core/silverplated wound Pro-Arte strings belong to D'Addario's premium classical guitar strings. All Pro-Arte treble strings are sorted by a sophisticated computer-controlled laser machine which performs diameter/tension measurements and quality checks, insuring true sounding, precise trebles in every set. Pro-Arte basses are (...)  

Set / Alto Guitar 6-string H-E-A-D-F#-H Medium Tension Trebles: Clear Nylon (H1, FIS2, D3) Basses: Nylon core/Silverplated wound (A4, E5, H6) Scale length: 54 cm Hannabach strings in proven quality.  

Set / Alto Guitar 6-string H-E-A-D-F#-H Medium Tension Trebles: Clear Nylon (H1, FIS2, D3) Basses: Nylon core/Silverplated wound (A4, E5, H6) Scale length: 54-56 cm Hannabach strings in proven quality.  

Set / Alto Guitar 6-string H-E-A-D-F#-H Medium Tension Trebles: Clear Nylon (H1, FIS2, D3) Basses: Nylon core/Silverplated wound (A4, E5, H6) Scale length: 57-59 cm Hannabach strings in proven quality.