These caps perfectly fit into the holes of the side panels made by Zortrax for the M200 3D printer. They are designed to close the holes cut on the panels to allow the insertion of the hooks. These caps help to avoid any lateral dispersion of the heat during print process. The caps are also equipped with a handle to allow a comfortable fitting. The STL files uploaded include the two caps designed for the left and right hole of each side panel, also is present the cap to close the hole of the front panel where is located the Secure Digital reader.You can print these caps using full infill and 20° support.