End Fasteners Assemblies provide a fixed 90° connection between two 15 Series extrusions. You will only need to drill a small access hole in one extrusion, and tap the end of the mating extrusion. Save time and money with this quick and almost invisible connection. Compatible with 15 Series Aluminum Extrusion Profile Each Assembly includes two pieces – (1) End Fastener Clip, and (1) Button Head Socket Cap Screw - Stainless Steel. These parts are 100% equivalent to the following manufacturers: 80/20 #3380 T-Slots #651161 Frame-World #EF-29 McMaster #47065T156 Sutton Concepts 1217-SS