This light decoration spans 5 ft in diameter on a black wire with 105 pre-attached incandescent 2.5 V mini bulbs and one spider light in the center. These light sets come with suction cups which allows easy installation on windows. These lights are suitable for indoor/ outdoor use and includes replacement bulbs. If one light goes out the rest stay lit.105 pre-attached incandescent 2.5 V mini bulbsBlack wire with one spider light in centerIncludes suction cups which allows easy installation on front windows