This is a spare part of the Real FX Racing transmitter stering wheel. This part breaks in many cases and there are no spare parts for this.
Part as shown was printed by shapeways and fits perfectly.
Note: you have to shorten the thread of the screw to ~12mm to fit with this part, or to use a new one with this size! I didn't want to use the length of the hole of the original part because I didn't want to loose stability.
Made with Autodesk Fusion 360.