Base Ten Set in the number range of 1000. Contains 100 yellow unit cube, 20 green ten rods, 10 blue hundred flats (5 blank and 5 with raised numbers), 1 red thousand cube and 1 empty decimeter cube. Units, rods and flats are interlockingPacked in a box with instructionsDimensions: 300 x 120 x 120mmRE-Plastic® is 100% post-consumer recycled plastic which is 100% recyclable againSmall parts - not suitable for children under 3 years