Material ~ Crafted from the finest Hypoallergenic Ebony woods. Chin Rest Clamp Screws. They are made of quality wood and metal, support long-term use without going rust or decay. Standard bracket ~ With our standard metal bracket, the whole devices are quite easy to attach to your violin. Center mount ~ Guarneri-style chin rest curve fits your chin better, making it more comfortable for you to play your violin. Packaging List ~ 1x violin chinrest + 1x Chin Rest Clamp Screws. Fits ~ 4/4 Full size Violin