Wooden Educational Counting Toys - Math Abacus Number Learning and Counting Stacker Stacking Game Toy for Kids 3 year old and up (with 55 Beads) Set up with 55 pcs stacking ring puzzles of ten columns and one double-sided wooden basic Made of high quality solid wood painted with eco-friendly water paint Makes it so much easier to teach the kids addition and subtraction 10 kinds of rainbow color beads, teach color recognition skills Size about 13.8 x 4.9 x 2 inches, 12 oz; Recommended age 3 up;