This product is protective case of SainSmart R3, fastened by screws. It is made by high grade acryl, which provides excellent protection, with fashion appearance. This is unique design provides easy connection to other components. The dimension of enclosure box is the same as the arduino UNO R3. Description: Compatible with Arduino UNO R3 (unassembled) The Cover is ajustable. Color: Transparent Material: Acrylic Note: This product only includes the case, there is no arduino UNO R3 board inside of the package Package Includes: 1x Acrylic Shell Case Box for Arduino UNO R3 Note: Not include the arduino UNO R3