1、INCLUDED TOOLS: Including 2pcs violin cheek rest and 4pcs screws suitable for 3/4 4/4 violin sufficient quantity for easy use and replacement at any time. 2、METAL MATERIAL: Using excellent metal materials has high hardness and strength wear resistance and corrosion resistance with a long service life. 3、STANDARD SIZE: These chin rests and screws are compact and standard in size and can be used as a direct replacement for old or broken violin parts. 4、GLOSSY FINISH: The violin chin rest has a glossy appearance no burrs and no gaps and will not hurt your hands or scratch the instrument when using. 5、GOOD STABILITY: These violin chin rests are compact in structure and have good stability after installation ensuring good performance of the violin.