This is a Guard Security chain door guard.
It is made from brass-plated steel. There are directions on the back of the package for how to put the chain in place, as well as screws to help with assembly.
The package measures approximately 0.75" tall, 5.5" wide, and 6" deep.
This item was made in China.
The chain door guard comes in great pre-owned condition. It comes in its original packaging.