Mercedes part no. A1646981530 Running board insert plug

A screw plug to fasten your running board of a Mercedes GL or ML (likely more models, X164 or W164). It fits smugly to my 2006 GL 320 CDI running board. Choose a black filament and to what you like to polish or whatever. I had a dark grey PLA and can't really notice the difference unless I look hard. If you're picky about it, buy the original part or from Ebay at around USD16/piece. Use the FreeCad file to modify to your own use.