This is the 17-rod Abacus Tool with Yellow Beads. This product is made up of plastic and is yellow and black in color. This is a very durable product and is made from superior quality plastic. This helps students to learn Abacus techniques. With the help of this tool, a child can learn how to do fast calculations. PROFESSIONAL RELIABILITY GOES BACK CENTURIES: This 17 digit standard abacus is the abacus in classical form, featuring the system used before modern numerals that are still used in parts of the world by merchants, traders, and clerks. A GREAT EDUCATIONAL TOOL: When learning on the abacus, math practice can be more effective because you may remember more. This makes using an abacus for kids math, a great way to teach them how to count. SOLID PLASTIC FRAME: Quality design has been taken to the next level with this 17 digit standard abacus with a plastic frame, making it a decorative piece that’s home friendly.