Still the teachers and players go to String Set avialble here at a sensible price

This listing features a plated E string as an alternative depending on your playing style and repertoire

The 129 E string only is in the set 135B by Thomastik Dominant. Here you have the E string 129 model pt.no. so you can change only the E string as it's snapped, tired, dull, etc...

The standard 135B set is also listed separately.