Great for building shapes and playing marble gamesEngage in magnet play, count, sort, and moreGreat for demonstrations of magnetic properties5/8" diameterIncludes 400 magnet 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. Engage in magnet play, build pyramids, count, sort, and more! Bold, assorted colors. For ages 4+, grades PreK+. Each pack includes 400 marbles in a display box.