a grommet is something put inside the ear drum and it drains fluid from from sych things as glue ear they are mainly used with children and are in the eardrum for about a yearA protective eyelet in a...
Grommets are available in a wide range of materials, including plastic, rubber, steel, copper, brass, aluminum, zinc and stainless steel. Many types also can be painted and lacquered, or plated with...