This a Amazon Fire 7 Tablet arthritis support Aid. It is meant to help those of us with old broken hands to hold this thin tablet with less stress on our hands. It is designed to allow right hand or left hand use. There a large thumb rest which along with a finger ridge on the bottom to help support the tablet without applying a tight grip. The design is in two pieces with the main part being the case that surrounds the tablet with the second part being an end cap to hold everything together. Two #4 sheet metal screws are used to fasten the end cap.