Bow Straightener violin Correctors,Violin Straighter Bowing Collimator Adjuster Corrector Guide tool For beginner ing Exercise(1/2 4/4 Violins) practice arieor

【Adaptability】Violin Bow Collimator, Two alternatives, one is applicable to 1/8 - 1/4 violins and the other one is used for 1/2 - 4/4 violins. 【Durability】Violin Bow Adjuster, Transparent part is made of tough plastic. 【Robustness】Violin Bow Straighter, The adjustable strap with fine workmanship is firm and strong, difficult to break off, wearable, no harm to your instrument. 【Convenience】Violin Bow Corrector, The closure design is easy to mount on or take it down. 【Practice Enhancement】4/4 Violin Bow Collimator, Self bowing practice guide and it help you cultivate correct bowing and wrist action.