Aluminum Profile 3030 V-Slot (white frame) 1m

From the shop's description

Aluminum Profile 3030 V-Slot (white frame) 1m is a high-quality electronic component designed for Arduino, prototyping, and educational electronics. Aluminium profile Extrusion 3030 1m Silver It’s perfect for DIY makers, students, and anyone building custom electronic circuits or STEM kits.