Item Type: For Raspberry Pi shellMaterial: Auminum AlloyApplicable Model: For Raspberry Pi 4BPackage List1 Set (2 Pieces) x Shell1 x Side Panel1 x Sticker2 x Silicone Heat Dissipation Sticker8 x Screw4 x Anti-Collision Particles1 x Wrench1It is an ultrathin design with a thickness of only 14mm, which is light and beautiful and easy to install. 2Allaluminum CNC highprecision processing technology, heat dissipation shell specially designed for Raspberry Pi 4B. 3Passive heat dissipation of the whole shell, support for CPU and memory heat dissipation, better effect. 4Antislip rubber particles, more firm, prevent scratches, it can better protect your equipment and improve working performance. 5It is made of selected highquality aluminum alloy materials, durable and durable, and has a long service life.