1、It is an ultra‑thin design with a thickness of only 14mm, which is light and beautiful and easy to install. 2、All‑aluminum CNC high‑precision processing technology, heat dissipation shell specially designed for Raspberry Pi 4B. 3、Passive heat dissipation of the whole shell, support for CPU and memory heat dissipation, better effect. 4、Anti‑slip rubber particles, more firm, prevent scratches, it can better protect your equipment and improve working performance. 5、It is made of selected high‑quality aluminum alloy materials, durable and durable, and has a long service life. 1 Set (2 Pieces) x Shell1 x Side Panel1 x Sticker2 x Silicone Heat Dissipation Sticker8 x Screw4 x Anti-Collision Particles1 x Wrench Item Type: For Raspberry Pi shellMaterial: Auminum AlloyApplicable Model: For Raspberry Pi 4B