It's made of aluminum alloy and ABS. Fit for almost kind of handlebar. High-quality ringtone, clear and loud, not harsh, long and pleasant tail sound. Ling ring up to more than 120 decibels, in the noisy street can also safely remind the front to avoid. Personality poking design, simple and convenient. Pull off the pick with your hand, and then release it, and the bell will make a clear sound, which is very convenient and fast, with two picks and two kinds of ringtones.