Materials: EVA foam, high density plastic and stainless steel.
 
The ball release is used for the start of play of water polo matches. Retained on the half distance line, the ball is put into play when the ball release is submerged by pulling the rope from the side of the pool, allowing for fair and accurate starts every time. Manufactured from EVA foam, high density plastic and stainless steel, it is designed to hold both men and women water polo balls. In order to use this release system, two eyebolts need to be installed at the bottom of the pool.