includes one plastic mobile holder and 2 screws the mobile charger S3XY holder simply slides in the holder making for less stress on the plug screw holes are inset and designed for a standard drywall screws plastic used to make this item is of PLA type which is a biodegradable thermoplastic aliphatic polyester derived from renewable resources such as corn starch this is a custom item that is made to order using 3D printing technology make in our shop in the USA