This twisted piece of metal completes our vast range of Poi accessories. Simply put, its function is to attach any ball to any chain or string. Thread onto the Magic metal your String/chain using a split ring, then squeeze the loop with pliers. After drilling a hole in a ball ( using a 9mm drill bit), insert the Magic metal length ways into the ball. You can use any ball from an old tennis ball to a more aesthetically pleasing Juggling stage ball.