This is the Raspberry Pi 4 case , which is made by robust aluminum alloy and ABSIt use aluminum-alloy injection metod so that stronger and more delicate than CNC process.Ingenious hole position design, GPIO cable outlet and other raspberry pi 4B interfaces are reserved in the shell, which also takes into account the heat dissipation hole position of raspberry piOf course the case has heat dissipation for Raspberry Pi 4 by passive cooling with Heat sink and aluminum body.Compatible With: for Raspberry Pi 4 Model BAccessory Type: CasesCooling: Passive coolingType: Shellcolor:BlackMaterial:Aluminum alloy+ABSsize:95-64 x 31MMPackage Contents:1 x Shell1 x Heat Sink Fan1 x Screw Pack4 x Heat Sink/1 x Shell1 x Screw PackOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.