GeauxRobot Raspberry Pi B+ Case Box Enclosure Dog Bone Shape Compatible with Raspberry Pi 3 Model B+, 3B, 2 Model B, A+, B +, B and A 2 pieces box parts, 4 anti-slip Round Button Rubber and metal & nylon screws Nylon screws holding the Pi to the case, very sturdy you can build a stack case by purchasing our Stackable Kit (B00MRLM9QS) An step-by-step assambly guide is includedRaspberry Pi Board Not Included