Plastic

This Listing is for Individual Bike Lights, not pairs. You may order a quantities of 1, 2, or 4 Packs. The more you order , the better discount you receive!For example: If you order a 4 Pack - You will receive a total of 4 Individual Bike Lights Bicycle wire lights LED lights, night riding warning, direct plug wire on the bike, tire rotation, then it will light up,serve as a warning. LED Colorful light show,energy saving!When your wheels start to move, they automatically flash light up creating a solid disk of light that appears to hover above your wheels. When you stop they will switch off to save battery power. Make your car looks beautiful. Bring more enjoyment to your drive. Specs: LED Color :Blue (all lights with blue led inside) just the color of stick is different. Motion activated!!! Specification: Condition:Brand New Material: led Product Size:6*1.5*1.5 cm Color:As picture 3x batteries included with each light fit for british and american style valve stems.