YXQ Pre wired led light can use them to do DIY LED projects,school science experiments, car Decorations, electronic and electrical experiments, etc. Light color: Red/Orange/Yellow/Green/Blue/Purple Forward voltage: DC 3-6V Forward current: 20mA Wire length: About 20cm / 7.9 inches LED type: 5mm Round Top Bulb Package Includes: 36PCS x Pre-wired LEDs(6PCS X 6 Colors) 6PCS : Red 6PCS : Orange 6PCS : Yellow 6PCS : Green 6PCS : Blue 6PCS : Purple