The Hunter Series lights are a simple and effective way to increase your safety when biking at night. The two LED design makes light more visible from the side. The universal silicone rubber bracket fits all handlebar and seat post diameters and does not require tools for installation or removal. Features . Set includes 2 white and 2 red LEDs. 3 functions steady blinking and fast blinking. Universal silicon attachments fit all handlebars and seat posts. Batteries are included. On a header card. Dimension - 2 x 1 x 1 in.. Item Weight - 0.3 lbs.