superdream Bike Wheel Lights, Waterproof 3 Light Mode Options Bicycle Spoke Lights, Used for Safety and Warning (Pack of 2) Easy to install---Press it onto spokes of your wheel and slide toward rim until fit is tight, and it then remains securely in place. No tools required Safety guaranteed---These wheel lights will make your bike that much more noticeable when riding at night. They are so cool looking!! Three light modes---Fast flashing , slow flashing and full brightness. You mainly grabbed these for night safety so others would see you, but it also made other jealous as the same time Highlight the personality---For vocational rider or casual cyclist, show your cool personalities. Very easy to hook on to your spokes and they shine very bright! Stable---Well made and waterproof. Remain securely locked in position, even during off - road use