One spherical bearing spacer and one O-ring to suit Ohlins shocks.
Each spherical bearing typically has one spacer per side, so you need two per bearing.
They are stunning. Machined from Titanium (Ti6-4 grade 5)
They press into the spherical bearing and have a 10mm bolt hole up the middle.
This spacer is very thin and is the one needed if you are mounting the shocks to the CR250 which has very little clearance for the width of the mounts.
(the picture shows two spacers, you are buying one)