Discovered in the depths at Stevens Magic Emporium. Original aluminum chop cans. Best Feature: Unlike some other models these have STRONGER magnets – which is what you WANT. I have never understood why people skimp and use weak magnets for chop cups. With these you can rest assured they will hold out for you until the moment is right. Each product comes with a set of red 1” chop cup balls. Standard 12 ounce cans. No instructions included.