EMeskymall 20 Pieces Rubber Rings For Bike Bicycle LED Light Lamp Head Light Headlight Headlamp Big rubber ring dimension7.4 cm * 2 cm / 2.91" * 0.79" Small rubber ring dimension5.8 cm * 2 cm / 2.28" * 0.79" Material: Rubber Two kinds of stretchable rubber rings, suitable for different handlebars 10pcs big + 10pcs small rubber rings