■ This is a Cozina-type chin rest for violin, an evolved version of the Ergona type, ergonomically designed to reduce strain on the neck and jaw. It is made of high-quality ebony. ■ Weight: 53g (including clamp) ※ Price negotiation is not possible. ※ Shipping will be done on the next business day as the post office is closed on Saturdays, Sundays, and holidays. (Shipping may take 2-3 days if there are consecutive holidays.)