This simple product is a training / aiming aide for the player that uses the diamond system or just needs the help on improving banking skills. Installation is very easy. Peel the backing off one sticker at a time and follow, connecting each diamond around the table. Trim off excess sticker wherever the sticker overhangs on a pocket. The fit and finish is nice and clean. You can lift and reposition the sticker but the sticker basically has one reposition, so reposition sparingly.