4Pcs Aluminum Alloy 5 - Hole Right Angle Joining Plate, Outside Corner Connector for Frame Structures, Reinforcement Plate with Smooth Finish for 2020 3030 4040 Extrusion (Type 3030L)

Item Type: Joining PlateMaterial: Aluminum alloyNumber of Holes: 5Color: SilverModel Thickness(approx.) Hole diameter(approx.) Hole distance(approx.) Length(approx.) 2020L Shape 4mm / 0.2in 5mm / 0.2in 20mm / 0.8in 60mm / 2.4in 3030L Shape 4mm / 0.2in 6.5mm / 0.3in 30mm / 1.2in 90mm / 3.5in 4040L Shape 6mm / 0.2in 8.5mm / 0.3in 40mm / 1.6in 120mm / 4.7inPackage List：4 x Joining Plate

• Precision 5-Hole Design: This aluminum alloy right angle joining plate features a 5-hole layout optimized for vertical joints, enabling secure and stable connections in DIY frame builds like 3D printers, CNC routers, and robotic arms, giving you infinite positioning flexibility for custom structural designs.
• Universal Compatibility: The outside corner connecting plate fits standard 2020, 3030, and 4040 aluminum extrusion profiles, making it ideal for modular construction in industrial machinery, automation projects, or home workshop setups requiring sturdy reinforcement at right angles.
• Wide Application Range: Perfect for engineers, makers, and hobbyists working on CNC cutters, robotics, exhibition booths, or furniture frames, this joining plate delivers reliable support wherever strong right-angle connections are needed in lightweight yet structures.
• High-Quality Aluminum Alloy: Crafted from durable aluminum alloy with a smooth surface finish, this reinforcement plate resists , won’t rust over time, and ensures safe handling during assembly without sharp edges that could scratch hands or damage components.
• Complete Set with Clear Specs: Package includes 4 pieces of silver right angle joining plates; available in three sizes—2020 (60mm), 3030 (90mm), and 4040 (120mm)—each with precisely drilled holes matching standard extrusion slot spacing for quick, tool-friendly installation.