ROCKBROS Hidden Bike Bell Clear Loud Sound 22.2/25.4/31.8mm Bars 100DB Bike Horn Short Sleeved Jerseys ★WAYER -RESISTANT MATERIAL: Our bike

★WAYER -RESISTANT MATERIAL: Our bike top tube bag made of water-resistant Carbon fiber PU surface material

When cycling

the electric pump can automatically pump the air out when it happened

prevents scratches

ROCKBROS Hidden Bike Bell Clear Loud Sound 22.2/25.4/31.8mm Bars 100DB Bike Horn Short Sleeved Jerseys ★WAYER -RESISTANT MATERIAL: Our bikeCLEAR AND LOND SOUND Small size, big energy. The sound of bike bell is clear and loud. The highest decibel reaches 100db. Even on a noisy road, can warn passing vehicles and people QUICK INSTALLATIONOur bike bells for adults fit standard bicycle handlebar sizes of 22. 2 mm 25. 4 mm 31. 8 mm. Wide application and easy to install. Only one screw can finish installation and the tool is provided in the package LONG LASTING & STURDYOur bicycle bell was