D`Addario Helicore viola SET 16… D`Addario Helicore viola SET up to 15", short scale Item No. HS410 Manufacturer D`Addario D`Addario Helicore viola SET, … D'Addario Helicore viola SET up to 15", short scale, HS411, HS412, HS413, HS414 × D`Addario Helicore viola SET up to 15", short scale