Save with bulk purchases. For professional installers.10,000 Non-penetrating fasteners. You will receive 100 bags of hooks and 100 bags of washers. Now only $48 / set of 100 hooks and 100 washers. Compare with $65 per set when purchased individually. Buy more and save more. Stock up and save. Our specially designed fasteners are made from 100% aluminum to minimize corrosion. Designed to hold up to extreme weather conditions. Our fasteners will work with almost all solar panels. Fasteners will not damage your panels, protecting your solar panel warranty. Washers are painted black on one side to match the screen for a neat appearance and ease in installation. We exclusively use our own wire and fasteners for all our company installs. With 2,000+ installs in the last 10 years. For best results, we recommend using our PVC coated wire. Wire is made of galvanized steel and PVC coated for extra protection and appearance. Wire is available in 4 inch, 6 inch and 8 inch widths and 100 foot lengths. Check out our complete kits on our products page . For guidance with how to use the fasteners, check out our installation tips. Have a question? give us a call at (973) 408 9110. We love to hear from you. All orders ship within 1 business day.