Powell & Peralta 'Rat Nuts Truck' mounting hardware. 1980s NOS [new old stock]. Like original Rat Nuts for rails and skids, but over sized and designed for truck mounting with a 1/2" riser. From the packaging: "Provides a smooth bolt-free deck surface. Allows grip tape to be installed or replaced without removing trucks or accessories." Comes with 8 x Rat Nuts, 8 x 1.5" Rat Screws, 8 x flat washers, original bag, header card and Rat Nuts sticker. Made in the USA.