Eightpack of aluminum profile 3D right angle connector brackets with screws designed to work with 20x20 mm, 30x30 mm, and 40x40 mm aluminum extrusion profiles. These brackets provide a clean, strong 90degree joint for constructing frame corners in a variety of DIY and professional projects. Key benefits Easy, fast assembly: quicktoinstall right angle joints help you build frames and enclosures with minimal tools and effort. Flexible compatibility: fits multiple common extrusion sizes (20x20, 30x30, 40x40 mm), enabling versatile use across different projects. Strong and lightweight: made from durable aluminum alloy to deliver rigidity without adding excessive weight. Included hardware: screws are included to simplify installation and reduce the need to source fasteners separately. Precise corners: engineered to maintain square, accurate 90degree angles for stable frame construction. Reusable and adjustable: brackets can be disassembled and reused if your project needs to be reconfigured. Key attributes Material: aluminum alloy Profile compatibility: 20x20, 30x30, and 40x40 mm aluminum extrusion profiles Type: 3D right angle connector bracket Package quantity: 8 pieces Screws: included with each bracket Finish: natural aluminum color (uncoated) Use cases 3D printer frames and enclosures: create rigid, square frames for stable printers or protective enclosures. CNC or robotic frames: form sturdy gantries and chassis that maintain precise right angles under load. DIY workstations, display stands, or equipment racks: build custom supports and frames for workspaces or areas. Installation tips Align bracket holes with the profile slots and insert the included screws. Tighten securely to maintain square joints; avoid overtightening to prevent profile deformation. Use appropriate tools (such as a hex key) to ensure a snug, flush fit.