Bolt Assembly, For Slot Width 0.3 in, Steel, Zinc-Plated, Fastener Thread Size 1/4 In. -20, Fastener Thread Length 1/2 in, T-Nut, Socket Head Cap, Threaded Hole Location Single Center, Slide-In, Inch, Compatible Brand and Series 80/20, 10 Series, Compatible Manufacturer Model Number 2128, 2129, 10 Series, Package Quantity 15