Final answer:
The size and shape marked on the pack material when reinforcing a grommet depend on the specific design and requirements of the grommet. In this case, the reinforced grommet consists of a 7 cm diameter PVC pipe with 10 holes (3 mm) on both ends.
Step-by-step explanation:
When reinforcing a grommet, the size and shape marked on the pack material will depend on the specific design and requirements of the grommet.
In the context of the given information, the reinforced grommet consists of a 7 cm diameter PVC pipe with 10 holes (3 mm) on both ends across its diameter.
This design allows for watertight capsules that slowly release CS when submerged in seawater.