D’Addario Helicore Viola June 1, 2012 by The String & Horn Shop » Products » Orchestra » Orchestra Accessories » D'Addario Helicore Viola Individual string Medium tension Steel core total_sales: 0 Product Options Key: -- Please Select -- A C D G Scale Length: -- Please Select -- 12" 13" 14" 15" 16" Combination of product variants is not available Quantity Old Price: from $22.00 Price: from $8.28 You save: $0.00 Updating cart...