This metal 90 degree aluminum angle bracket measures 3 x 3 x .25 x 1.312 inches with four .328 inch diameter thru holes. Perfect for your 80/20 t slot aluminum extrusion project! 8020 corner bracket is compatible with 15 Series aluminum extrusions or 1.5 inch based extruded profiles. Works with many of our competitors aluminum extruded frame. Strong and durable brackets that can be easily removable and reused. Top line quality control with smooth de-burred edges, tight tolerances, and a clear anodize finish ensures a perfect bracket. Made out of 6005A-T61 (or comparable aluminum) with anodize finish, this can be used as brackets for home improvement projects, t slot aluminum extrusion, aluminum framing, or 3D Printer applications. 80/20’s #3320 assembly hardware is recommended (but not included) for 8020 extruded aluminum t slot extrusion based applications. Perfect for 1515, 1530, 1575, 3030, and many more profiles!