This is a BONMUSICA violin shoulder rest. Purchased about 1 year ago and used for about 6 months. It is marked as 1/4 size, but I used it with a SUZUKI 1/8 size violin. The 1/4 size sticker on the shoulder rest is peeling off. The sticker with the red circle was placed as a mark for attaching it to the violin. I will leave them as they are without removing them. I bent it slightly to adjust it, so there are marks from bending on the metal parts. Please check photo 7. The instruction manual, with German and English text, is also included.