Hammond Design is a mouthpiece maker founded by Carl Hammond, who originally designed custom mouthpieces for the company Silky. Carl Hammond's mouthpieces are recognized by musicians around the world for their excellent craftsmanship and professionalism. Silver-plated finish. (From the manufacturer) ・Model: 21BL ・Cup Inner Diameter: 28.95mm (Similar to a Bach 1G size) ・Silver ・Suggested Retail Price: ¥34,700 (Joy Brass: ¥29,920 including tax) ○BL: Deep The entrance to the throat is funnel-shaped, providing a very open feel while also having the controllability of a shallower cup. I am selling this because it does not fit the instrument I use. I have played it for only a few minutes, so it is almost new.