Viola Shoulder Rest - Brand: Kun - Model Name: Kun Rest - Type: Viola Shoulder Rest Thank you for viewing. This is a shoulder rest that came with my viola when I purchased it. I am selling it because I have another shoulder rest. It has not been used since I purchased it, but it may have been used for trial playing, as it was attached to the instrument during in-store sales. It works without any problems, but please refrain from purchasing if you are concerned about minor scratches, etc.