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🔩【Durable & Anti-Corrosion Black Coating】 Our black 2020 interior corner connectors are made from high-strength aluminum alloy with a durable black coating, providing enhanced corrosion resistance and scratch resistance. The M5 sliding T-nuts and hex screws are made of black-coated carbon steel, ensuring long-term durability and stability in industrial and DIY applications. ⚙️【Easy & Secure Installation with Ball-End Hex Wrench】 The included ball-end hex wrench allows for angled tightening, making installation easier even in tight or hard-to-reach spaces. These L-shape inside brackets fit seamlessly into 20 Series aluminum profiles with 6mm T-slots, ensuring a clean and secure internal connection without protruding edges. 🛠️【Complete Set for Industrial Applications】 This kit includes 40 black 2020 L-shape interior corner brackets, 80 black M5 hex socket cap screws, and 1 ball-end hex wrench, providing all necessary components to securely join 2020 & 2040 aluminum extrusion profiles. Ideal for reinforcing structural stability in various industrial and DIY applications. 🏗️【Wide Range of Applications】 Perfect for industrial aluminum frame structures, 3D printers, CNC routers, laser engravers, robotic projects, workstations, and custom furniture. Fully compatible with 20 Series aluminum extrusion profiles, making it an excellent choice for professional and DIY builders alike. 🌱【Eco-Friendly Packaging】 We care about sustainability—this product comes in eco-conscious, recyclable packaging to help reduce plastic waste and minimize environmental impact. Color Black Set Name 40 Sets Inside Bracket 2020 Black Brand Name TOCLUX Unit Count 40.0 Count Finish Types Painted Manufacturer Pengde Hardware Manufacturing Model Number JCB2020D Material Type Alloy Steel Item Dimensions 6.89 x 3.39 x 0.75 inches Included Components 1 Ball-end Hex Wrench, 40 pcs Inside Brackets 2020 Black, 80 pcs Black M5 Hex Socket Set Screws