Letting go of a brand new Kuwahara Multi Pressure Anchor expander plug. The best available lightweight yet solidly built expander plug that will support your steerer tube properly. Made in Japan, this expander plug is an excellent option for those looking to move away from the Extralite kind of expander plug that do not properly support your steerer tube around the stem clamp area. A rare and exclusive item that is difficult to find outside of Japan.
This expander plug is only about 26g without the bolt. You may consider swapping the bolt for a titanium one for even greater weight savings. Hand carried an extra one from Japan back for my friend, but he decided to downgrade to a temporary bike with aluminium steerer tube that does not need an expander plug.
My loss your gain - SMS me if you're interested!