Niti Open Coil Spring 0.012”180mm,with 2 molar distalizer 8mm length Left/Right each.   A92-123gLR

Niti Open Coil Spring 0.012”180mm,with 2 molar distalizer 10mm length Left/Right each.  A92-123hLR

Niti Open Coil Spring 0.012”180mm,with 2 molar distalizer 12mm length Left/Right each.  A92-123iLR