☛The manufacturer has gone out of business, which has led to the discontinuation of caps in all different sizes.
Leather cap made in Japan. dia.34.5mm (1-inch lower from the top)
Made in Japan
Utaguchi Cover for Shakuhachi
Large Size, Japanese Genuine Leather Utaguchi Cap, ¥3300
Medium Size, Japanese Genuine Leather Utaguchi Cap, ¥2600