.1, the defining feature of this shoulder rest is the padded base "hook" base hooks on the player's shoulder to keep the instrument in place. The "hook" is adjustable, so it can accurately match the curve of each player's arm. Some armrests feel as if they are slipping down at any moment. With the violin rib, you can be sure that your violin will stay stable2, to get the full effect of the shoulder rest, make sure it fits tightly to your shoulders and chest. This is possible because of the incredible versatility of the shoulder rest. Not only can you adjust the hook to the contour to the body, you can adjust the height, sides, bevel, length and span. The hook section itself has 3 different settings. Talk about your area of activity and customization! The settings are accommodated for sloping or small shoulders, long or short upper bodies.3, these settings are available, it is greatly enhanced to increase the benefits of shoulder support. With the right customization of the shoulder rest, players who use the shoulder rest will benefit from consistency in technique. They will release tension in your neck or shoulder.4, the violin rib will hold the violin at the right angle and not droop. Proper posture makes techniques such as offset and vibrato much easier!5, the two pieces of shoulder rest are replacing the violin rib with shoulder rest if damaged. Product Parameters:Material: Titanium AlloyColor: BlackStyle: