These are Frosted Ultra Detail (FUD) propeller disks and machinegun crew for use with the 1:285/6mm/1:288 Zeppelin in Versatile Plastic. You'll probably only need two crew for the top machinegun nest and two propeller disks each (for gondola rear and outboard), but spares are included since Detail Plastic material is fragile.
See also:
Zeppelin Type P,
Zeppelin Parts