To activate your motion activated LED Kaleidoscope Bike Tire Lights, fasten the adjustable snap-ons to your spokes and start riding. The 30 light patterns cycle through all options automatically. It’s beautiful! Note: Only 12 patterns are pictured, but there are 30 total! Dimensions (L x W): 6.5″ x 1.5″ LEDs: Red, Blue, Green, Yellow Back Connectors Expandable from 2″ to 2.8″ to accomodate different spoke spacings. Comes ready to use with 3 replaceable AAA Batteries.