Grip H Clip is a roof sheathing clip made out of strong Nylon 66. It is installed and holds the roof sheathing half way between the trusses. The Grip H Clip is designed to be pre-installed and will grip the roof sheathing. It will stay in place while the roof sheathing is being nailed. Grip H Clip has lead-ins that allow the installer to easily install the adjoining sheet without the need to touch or adjust the clip. This makes installing roof sheathing faster, easier, and safer, especially on windy days. Packaged in bags of 50 or 250 clips. Visit www.griphclip.com to see a video that shows the ease of installation. You will save labor hours and eliminate the frustration of working with clips that can be hard to install and keep falling off.