1. Material: alloy + plastic
2. Waterproof and rust-proof, more durable, copper alloy is not easy to rust, high-strength engineering plastic bracket is not easy to age
3. Tool-free installation, quick-release bracket, easy to install, suitable for handlebar diameter 16-32 mm
4. Compact, light and burden-free, weighing only 48 grams
5. Stainless steel spring pick, easy to ring the bell
6. Impact bell, the ring tone is crisper and melodious
7. Copper alloy bell surface, retro style, stable and not deformed