We do not currently offer 12-string sets in a "packaged" version, however, we do have the required parts available to make custom sets if desired......
E 1&2 .010 in 0.25 mm acoustic number 1 and 1
B 3&4 .014 in 0.36 mm acoustic number 2 and 2
G 5 .023 in 0.58 mm acoustic number 3
G 6 .008 in 0.20 mm acoustic number 1
D 7 .030 in 0.76 mm acoustic number 4
D 8 .012 in 0.30 mm acoustic number 1 LH
A 9 .039 in 0.99 mm acoustic number 5
A10 .018 in 0.46 mm acoustic number 2 LH
E11 .047 in 1.19 mm acoustic number 6
E12 .027 in 0.69 mm acoustic number 4
Please send all custom order requests to sales@graphtech.com