Description These color-coded stacking masses help children see mass or weight relationships at a glance. Each weight is a different color and thickness, so they are easy to understand and manipulate for small hands. They are perfect for use with a wide variety of balances, including Item #5100-00. Set of 54 plastic weights includes: • Twenty (20) blue 1 g weights • Twenty (20) red 5 g weights • Ten (10) yellow 10 g weights • Four (4) green 20 g weights • Plastic storage box
