Fits various handlebars: The bicycle silicone strap comes with 10 large and 10 small mounts for easy headlight installation. Two types of stretchable rubber rings, suitable for various handlebars. You have an abundant quantity. Safe material: The bicycle headlight silicone strap is made of silicone which is waterproof, non-slip and shockproof. The silicone material is durable and not easily deformed. It has good stretchability, suitable for bicycle headlights with hooks. Durable and reliable: These silicone mounting rings are designed with easy-open straps that fit snugly around multiple sizes of seat posts and handlebars to keep lights secure and steady when riding in the dark and keep your flashlight steady. Easy to use: These bicycle rubber bands have strong elasticity that you can easily bend and stretch, you can use them with both hands and without using other tools. They provide excellent grip for lights and accessories in various positions and angles. Note: All data is measured manually, please allow 1-3 cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.