In case you need to replace yours for any reason.

Brembo dealers do not seem to be distributing hardware other than bleed screws and seals for these calipers. Turns out Centric makes a replacement, part number 117.63022

Tried it out and it's the right part. Slightly different alloy, though.

Not really a wear item, but if you change your pads a lot, having a spare couldn't hurt.