Cable Management: They are designed to allow cords to pass through desk surfaces in an orderly manner, keeping them tidy and hiding them from view.Size and Structure: The covers are generally round and often fit standard hole sizes, such as 50mm (2 inches) in diameter.Design Details: They typically feature a rotatable or detachable cover that can be disassembled to fit different sizes of computer cables.Applications: These grommets are commonly used for computer desks in homes, offices, hotels, and banks.