The SpikeMate is a simple, versatile tool for practicing volleyball at your home, school or club. Is lightweight, easy to setup and use. The SpikeMate holds up to 5 volleyball balls (not included) for continuous hitting. It is for all ages and can be played individually or with others. Just connect to a basketball rim and adjust to desired height. Rim height depends on user equipment capability. The top of the ball is approx. 12” below the rim.