This set includes 2 boxes of Blue lights on green wire. Each box has 100 clear lights and measures 37 long, including a 18" lead cord, 4.25" spacing in between bulbs and a 3.5" end cord. Replacement bulbs and fuses included. Blue lights are great for decorating for multiple holidays! These lights feature socket lock, which means bulbs wont fall out of their sockets! UL Listed, suitable for indoor and outdoor use.