Not mine, no affiliation with this seller. Look at their other listings; there are some NOS RZ350 bits that I haven't seen for awhile, and the prices seem reasonable. Other cool automotive things, too, and things for other bikes as well.
https://www.ebay.com/itm/145194453703?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=HjBXwpQmSrW&sssrc=2047675&ssuid=R92VTU-vQ-6&widget_ver=artemis&media=COPY (https://www.ebay.com/itm/145194453703?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=HjBXwpQmSrW&sssrc=2047675&ssuid=R92VTU-vQ-6&widget_ver=artemis&media=COPY)