Benefits
The ball catch mechanism provides a sleek appearance while still allowing the door to swing in either direction.
Usage
Ball catch doors do not require the twisting of a doorknob to open--you simply push or pull to open.
Because ball catch mechanisms do not supply much security, they are used primarily indoors for closet doors and sometimes for outer screen doors.
Types
Ball catch mechanisms can be purchased in a variety of colors and sizes. They are constructed from steel, with the ball itself usually made of brass.
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Maintenance
After initial installation, ball catch mechanisms should be oiled, but they require no further maintenance for their operational lives.
Fun Fact
Ball catch mechanisms are often used with dummy spindles or fake doorknobs.