These are
the metal clamping edges where the headliner is clamped between.
You need 3
flat ones (BBT 2931-200) to mount the headliner in the cabin, but of course you
can also use them to mount a complete headliner in a bus which originally
didn't have one (like a panelvan for example) until '79.
The hooked
ones (BBT 2931-205) are only used in a BusT1 around the airbox (2x) and around
the cutout for the sunroof (6x) on a bus till '67.
Both clamps
have a length of 80cm.
