Student Number FrameMate Up to 20 Wooden Abacus with plastic beads on a metal rod.  New in package.  Wooden rack is 10 inches by 2.5 inches and has 20 beads grouped in fives by color.  Ideal for counting, addition, subtraction and early place value practice.  Easily hand washable for safety.  Price break for multiple quantities and we will happily combine shipping if you request an invoice before paying! FAST SHIPPING!!