Kooiman Maestro 2 Ergonomic Thumb Rest

This thumb rest is fully metal and adjustable, designed to improve comfort and reduce thumb strain by shifting weight to the joints. It mounts with a slide system and claims to enhance playing experience and prevent hand pain.

• The description claims this product improves comfort and reduces thumb strain.
• The description claims it enhances playing experience and prevents hand pain.
• The description claims it is built from high-quality metal.