Steel string (rope core) for viola. Long Scale (L) is considered the standard length
There are 4 products.
Steel string, aluminium wound.
Steel string, titanium wound.
Steel string, tungsten/silver wound. Long scale will fit many violas. For smaller violas and very large ones you can choose a string from the short/X-long category.
Steel string E for violin tuning or 5 string viola. Ball end. Available in medium.