This is a handmade bottom cap made by BRAKUL. It was used for about 3 months. The material is copper and has a pink gold-like color, which looks cute as an accent when attached to a silver instrument. Retail price: ¥19800 The outer circumference uses brass and body that have been hardened and tuned acoustically through hammering and heat. ・Copper Large Uses copper for the outer circumference. It produces a warm, deep sound like gold brass. Compatible manufacturers ■YAMAHA ・For normal use (YEP642, etc.)