String Aids Bow Straightener; Metal rods & soft rubber attached; Strong material.Very easy set-up & stably; Available for all violin sizes. To provide help to those who need it, so that users can play the violin better. lt can make beginners master the basic skills of transporting bows in a short period of time, and domore with less, so that beginners can not correct detours, effectively correct incorrect bowingtechniques, and improve learning efficiency and technical.
