L Corner Mount (Bracket)

From the shop's description

L Corner Mount (Bracket) is a high-quality electronic component designed for Arduino, prototyping, and educational electronics. Plate Corner Angle Bracket For Aluminium profile Extrusion 2020 5 Hole Black Joint Board Plate Corner Angle Bracket Galvanized steel 2mm Connection Joint Strip for 2020 Aluminum Profile It’s perfect for DIY makers, students, and anyone building custom electronic circuits or STEM kits.