Exclusively Designed to easily attach to gutters or shingles Designed for LED, C7, C9, Icicle, Mini, rope and tube wired lights Helps to give your outdoor lighting a professional look Quick and easy to position For Outdoor and Indoor use Easily attach your Christmas lights to your home with Home Accents Universal Shingle/Gutter Clips. Two boxes of 75 clips for a total of 150 clips. Simply attach to shingles or gutters and add lights. Will not damage structure.