Thicknesses can vary significantly; extremely thin thicknesses are considered foil or leaf, and pieces thicker than 6 mm (0.25 in) are considered plate. Sheet metal is available in flat pieces or coiled strips. The coils are formed by running a continuous sheet of metal through a roll slitter. The thickness of sheet metal is in the USA commonly specified by a traditional, non-linear measure known as its gauge.
Omar in Arabic is the plural of Omra which is when the people visit Mecca and turn around the Ka'ba. It also means populous and flourishing. Omar is the name of the companion of prophet Muhammad (PBUH) and is said by the prophet to be the most just person that humanity is to witness. Straight answer: It an Arabic name, meaning 'One who has a long life'.
In  Clarifications , it is stated that Omar is 34 years old. Omar was orphaned at a young age, and raised by his grandmother Josephine, who is largely responsible for his strict moral code, despite his criminal occupation. He attended Edmondson High School in West Baltimore, a few years behind Bunk Moreland.