... :1W,1*3W,3*1W,4W, 5W2)Base Option: clip/clamp base, L/LV type base, T type base, I type 2. Feature1)Pure Aluminum ... , good safety5)No UV, IR, less thermal dissipate, Lead-free, Mercury-free, environmental friendly.6)Long lifespan, more than 50000hours7)Small size ...