Violin Bow Collimator, Straight Guide Tool Collimator Adjuster Corrector for Beginner Training (1/8 1/4 Violins) Assist Correct

APPLICATION: The violin bow correct or is suitable for violin beginners and violinists. It play great role in mastering correct bowing action and improving their playing skills. ADJUSTABLE STRAP: The adjustable strap with fine workmanship is firm and strong, difficult to break off, wearable, no harm to your instrument. HOOK AND LOOP DESIGN: The hook and loop closure design is easy to mount on or take it down. PERFECT PRACTICE TOOL: The violin bow collimator can make self bowing practice guide and it help you cultivate correct bowing and wrist action. TWO SIZE TO CHOOSE: Two alternatives, one is applicable to 1/8 - 1/4 violins and the other one is used for 1/2 - 4/4 violins.