Description Designed as a violin bow corrector straightening tool, this attachment assists both beginners and professionals in refining their bow posture. The compact violin bow collimator ensures precise alignment and smooth movement, improving tone clarity while extending violin string life. Good for lessons, practice, or performance, its easy to use and portable. Features -Color:Multi -Material:Plastic -Size:5.50X5.50X2.00cm/2.16X2.16X0.79in -Precise bow correction: this violin bow corrector ensures straight bow movement, making it the ideal violin attachment for both beginners and professionals seeking accurate performance -Enhanced playing skills: with the violin bow collimator straightener, violin starters and seasoned players can improve their bow hold and correct posture with every practice session -Easy bow arc adjustment: the violin bow straightening guide tool allows for simple adjustment of bow arc, maintaining pure sound quality and aiding violin starter posture correction -Sturdy and portable design: compact and portable, this violin starter accessory is good for use at home or on-the-go, ensuring your violin beginner tool is always at hand -Instrument longevity: the violin training posture tool reduces friction and wear on strings, extending your violin's lifespan while also acting as a violin bow posture correction supplyPackage list: 1 x violin bow collimator