Quik-Targets create a unique visual reference point for learning how to direct the ball over the net at the preferred height for all strokes including the serve. Also teaches players to look over the net instead of through the net. Unlike cones and circles that lay directly on the court.... with the Quik-Targets on the net you can play points or rally. And with 2 or 3 Quik-Targets on the net at the same time this allows you to have multiple drills simultaneously. Last but not least....the white color of the tape between two Quik-Targets offers a 4th color and/or target.