These were found in with some veteran motorcycle parts

I.think they may be hand change lever knons

Black one has brass insert,white doesn't

Both are threaded,no idea of thread size.

They are about 36 to 38 mm across.white one seems marginally larger.

Used conditon,I am.assuming reproduction but not sure.

Both are dirty.some Mark's,stretches.

White one is very dirty marked and stained.

Sold as spares or repairs

Not sure what they fit it are off

Sent RM 2nd class post

Please check correct for your needs