Does anyone know where these can be picked up?

When you use the Google, it brings up the IVA thingy?

A mate bought a second hand pair of Mattocs and wants to drop the travel down to 140mm.

did it come with the IVA? they are the same spacers. look like these. He will need two of them to take it down to 140mm. Did the previous owner not have any, they come with some in the box.

Mattoc AM Spacer Kit – 141-30159-k010

The original owner? Mattocs come with all the required spacers.
He will need the expensive tool kit or a modified socket and cassette tool to be able to do the travel change tho.