This is a 12" VEX Robotics Competiton Trophy modeled by myself. It is based on the dimensions of the real thing. If you wish to print this at full scale and assemble with screws, you will need to use real spacers, screws, and nuts, as the spacer provided in the STL files is simply a solid cylinder. If you do not wish to assemble with screws and nuts, you can print out the solid spacers and glue the pieces together. STL files come full-scale, but unless you require a full-scale trophy, I recommend reducing the size.
-Black Spacers x4
If you print it at full scale, I would recommend supports, but if you print it smaller, there should be no need for supports.