Item Type: Enclosure for Raspberry Pi_x000D_ Material: Aluminum alloy_x000D_ Colour: Black 1The cooling enclosure is suitable for Raspberry Pi 2 3 B B+ Model, which plays a role of protection and heat dissipation. 2The shell has many small holes on both sides to facilitate uniform and efficient heat dissipation. 3Using excellent aluminum alloy material, has high hardness after high temperature quenching, and it is not easy to deform or corrode. 4The exterior of the protective shell is glossy and burr free, the installation is smoother, and will not damage the motherboard. 5The kit comes with a screwdriver and fasteners, easy to install and remove, and can replace old or broken heat dissipation shell. 4 x Enclosure 1 x Screwdriver 1 Set Fasteners