Great for building shapes and playing marble gamesEngage in magnet play, count, sort, and moreGreat for demonstrations of magnetic properties5/8" diameterIncludes 100 magnetic marbles
They look like ordinary marbles, but they re magnets too! Build pyramids and other fun shapes, play marble games and more. Each marble is 5/8" in diameter. Magnetic multicolored marbles 100 pack. Assorted colors.