This is one of the oldest cue clean tools around.
For nearly a hundred years, players have used it to clean and sand their cue.
hold a lightly-abrasive pad (much like a Scotch-Brite pad) inside a canvas-like tube, providing a non-damaging abrasive to clean and smooth your cue.
Simply slide over the cue, then rub it up and down to remove accumulated debris to get your cue looking and playing like new again.