I am offering two items.
One is steel wire cup-brush that can be held in an electric drill.
The shaft that is inserted into the drill's chuck is slightly less than 1/4" in diameter and 1-1/8" long.
The cup brush itself is 2" in diameter, and slightly less than 1-1/2" in height (cup and bristles together).
This is good for removing rust.
This wire wheel is lightly used.
I have only one.
The second item is a wire brush.
This brush is 13" long end-to-end.
The bristles are 6" long.
This brush is unused, but a few of the bristles have deformed.
The $5 price is for both together.