Ultra-small and lightweight band closure bell with a diameter of only 0.9 x 0.6 inches (23 x 14.5 mm). Copper Brass Small but sound well. Can be installed in Φ 0.9, 1.0, 1.1 inches (22.2, 25.4, 28.6, 31.8 mm) Use + screwdriver for installation. The use of a new type of gasket eliminates the lack of fixing force that is unique to the band clasp. The bottle can be easily attached and detached from the bracket. Pull easily rotates 360°. Made in Japan