Our versatile All-In-One Clips are preferred by many of our professional installers for decorating rooflines and gutters with C9, C7, and mini lights because they create smooth, even lines of bulbs that look spectacular. Use on rooflines with gutters, shingles, shake, flat tile, and slate. Use this one clips for all Christmas light mounting needs. Your satisfaction is our #1 priority and if you have any issues, please us know and we will gladly help.