Whether at home or in the gym the SKLZ(R) Shot Spotz offer a variety of drills or games to help improve your game. Help develop court awareness by providing reference points for instruction. Simply run drills or make a game out of it with the SKLZ(R) Shot Spotz. Product Features: 5 durable, high-density ground discs Discs numbered 1 through 5 for instructional use Develop good court positioning Can be used indoors or outdoors