•Improves Jumping •Builds desire to Jump •Offers incentive to jumpers •Measures improvement in jumping •Gives a goal to obtain Made of heavy duty metal & tough plastics for lasting wear. A numerical system marking different heights. The JUMP RACK is great for offering many incentives to developing jumpers. It is easily mounted on any type of wall. Each pendulum swings as tapped by the Jumper & returns to its normal hanging position. Each pendulum varies three inches in height. Instruction & hardware furnished for installation.