Imaginarium Wood Abacus Math Numbers Beads. Condition is "Used". Shipped with USPS Priority Mail. Dimensions are approximately 11 and seveneights inches wide, 12 inches tall, and 3 inches deep. This has 10 rows with 10 beads on each row for a total of 100 beads. The beads are made of wood and they are in the primary colors of orange, Yellow, lime green, blue, and red. The manufactures recommended age for this is three years old and up. This is a great learning tool for homeschooling, counting games, and math skills.