This unique string of lights comes with clear clips for easily attaching to your patio umbrella. The end to end connectors means you can connect multiple sets together.Details: Clear bulbs with white wire 20 mini clear white bulbs Lighted length: 19 ft. / Total length: 23.5 ft. 4.5 ft. lead cord, 4" tail cord Spacing between each bulb: 12" 120V 60hz Comes with replacement bulbs spare fuse and clips UL listed for indoor or outdoor use Contains end-to-end connectors which allows you to stack multiple lighted items together (not to exceed 210 watts)