This is a prop guard for the FPV Proto X. I noticed there were models on here for the Proto X, but the FPV variant is much larger. Printed on a Stratasys Dimension, the "TIGHT" version worked well. Printed on a Makerbot 2X, the "TIGHT" version needed LOTS of filing and sanding. I suggest using the standard version if you have a hobby level FDM printer. This would also work great if laser cut from thin polyethylene, delrin, or polcarbonate, which is why I included the DXF file. If you want to play with the geometry, download the Solidworks or STEP file.