Core Box Air-Release Vents enable "core blowing" equipment to effectively fill the core box with sand.
A core is a device used in casting and molding processes to produce internal cavities.
A pattern is a replica of a cast metal object.
A riser is a reservoir built into a metal casting mold to prevent cavities due to shrinkage.
A Gating System is the assembly of channels which facilitates the entry of molten metal into the mold cavity.