Wolf Forte Primo Violin Shoulder Rest for 4/4-3/4Made with sturdy but flexible aluminum which allows the player to shape the shoulder rest to their liking. The bottom side has awide pad madeof comfortable rubber. Included with the rest are two plastic spacing tubes which allow the arms to be stable when put into the highest position.Features: – Curved shape – Adjustable in height on both sides from 0.5cm to 8cm – Adjustable to any angle – Adjustable to any width – Flexible backplate for custom ergonomics