ITEM NAME:Spring Shoulder Rest Support Holder For Size 3/4 4/4 Red Violin Fiddle Musica Kw note:.Type: Violin Fiddle. Application: 3/4 & 4/4 Violin. 1x Violin Shoulder Rest. The thick velvet covered shoulder pad will also retain its shape and comfort even after prolonged periods of use. Ergonomic design shapes perfectly to the contour of the players shoulder.