Deluxe clip-on light clips ideal for use on shingles and gutters. Heavy-duty design is ultra-violet stabilized for durability. Designed for faster installation, makes it easy to position bulbs. Works with all decorative lights such as icicle lights, C-size, G-size, mini, and rope lights. Can be used with LED (light emitting diode) and incandescent bulb types. Designed for and used by professional decorators.