Objects that allow you to install caster wheels to the bottom of a PVC Shelving system so that you can move them around easily. Should be printed at least fifty percent infill. Not intended to carry a lot of weight so be cautious of this when placing items onto the shelves. Requires four caster wheels and four screws to secure firmly. The STL files have 6, 10, 15, and 20 millimeter holes. I have included the FreeCAD model file so you can modify the cylinder labeled Caster Shaft Hole to customize for your purpose.