The patent-pending Silverback Solar PV panel clip is easy to install and adjusts for any module thickness from 1.21" to 2.02". Each clip consists of a Saddle and Retainer. The Saddles are fastened with two self drilling screws, and the retainer is secured with a machine bolt. The guide legs on the retainer make it simple to install while reaching over the module, eliminating the need to stand on the modules as they are installed.