Come and see our amazing products. Our bike bells are made of high-quality aluminum and plastic material.,aluminum alloy composite material is more durable, even when used in rainy days, it will not rust.It can provide a crisp ringing sound, which is an essential bicycle accessory for adults and children riding on road or mountain roads. 100% guarantee for quality. The price includes shipping cost to ca. QTY for 8000pcs and over by ocean. Pls confirm with us about the packing info, stock color and exact production time before placing your order.