Rim center for the original Matra Bagheera Mk I rims, made of polyurethane resin.
In order to make the replicas of this piece, a silicone mold was made from an original piece in good condition, so the original piece did not have to be restored in order to make the mold.
A vacuum casting machine is used to fill the mold to avoid the formation of air chambers inside the mold and thus ensure good filling.