Stringed Instrument Accessories -Straighter Adjuster Violin Bow For 4/4 3/4 Acesscory Violin Bow Highlights Generic Brand Straighter Adjuster Violin Bow For 4/4 3/4 Acesscory Violin Bow Description: Compatible with 4/4 3/4 Violins Promotes straight tilt and correct wrist action, the best helper for beginners Ideal for student, violinist and beginner, violin teaching instrument and training equipment Accessory d perfect self-learning, portable, easy to install Brand new and high quality Material: Acrylic Size Chart: Approx. 6.5 x 4.4cm/2.55 x 1.73inch Package includes: 1 Piece Violin Bow Straighter Note: Due to the difference between different monitors, the picture may not reflect the actual color of the 'article. Due to manual measurement, there may be an error of 1-2mm.