This 5piece aluminum angle bracket set provides F connector style joints for aluminum extrusion framing. Each bracket is designed to fit common profile sizes and helps create strong, rightangled connections for sturdy frames and enclosures. Compatible with 20x20, 20x40, 40x40, 45x45 and 30x30 profiles (2020, 2040, 4040, 4545, 3030). Key benefits Strong, lightweight joints: aluminum construction delivers good strength with low weight, ideal for framing and lightduty assemblies. Quick and predictable assembly: the F connector design supports fast alignment of rightangle joints, reducing setup time. Improves frame rigidity: provides stable corners that help maintain square geometry during use. Broad compatibility: works across multiple standard extrusion profiles, enabling flexible project design. Durable and corrosionresistant: aluminum material offers longterm performance in typical workshop environments. Key attributes Material: aluminum Includes: 5 pieces Function: angle bracket F connectors for 90degree joints Compatibility: profiles 2020 (20x20), 2040 (20x40), 4040 (40x40), 4545 (45x45), and 3030 (30x30) Performance: designed to provide stable, square joints for extrusion framing Use cases Build a CNC enclosure or machine frame: combine multiple brackets to form a rigid, square enclosure around automation or electronics. Assemble a lightweight 3D printer or workbench frame: create sturdy corners for stable dimensions and easy access for maintenance. Create display stands, shelving, or tool racks: connect multiple profiles into a compact, modular structure with reliable rightangle joints. Tips for use Align brackets carefully at the corner before fastening to ensure square joints. Check the joint alignment as you tighten fasteners to maintain frame integrity. Use appropriate fasteners compatible with your extrusion system to complete the assembly.