Usage Tips:1. [Promoting Creativity] The Size Of These Two Duplo Boards Is 38Cm X 38Cm. Duplo Boards Can Be Used In Different Scenes To Build Large Houses, Castles, Towers, Etc. Children Play The Most Fun Games, And Show All Their Creations With Unlimited Imagination And Creativity.2. [Compatible With All Major s] The Number Of Duplo Cylinders Is 24 X 24 Point Base Plate. The Duplo Base Plate Is Compatible With Duplo Stone, But The Duplo Base Plate Is Compatible With All Large Block s That Accept Large Grain Standard Blocks.3. [Safety And Environmental Protection Materials] Our Large Duplo Base Plate Is Made Of Environment-Friendly Abs Materials, Which Is Odorless, Allowing Children To Enjoy Happiness And Health While Creating Creative Thinking.4. [Simple Operation] On This Duplo Base Plate, You Can Easily Loosen And Fix The Structural Block. On The Outside, The Duplo Base Plate Can Be Firmly Attached To The Stone. Even If You Flip The Duplo Backplane, The Building Block Does Not Fall. We Protect Your Success.5. [Preschool Children'S Gifts] Whether It Is Home, Aircraft, Boats Or Small Animals, There Is A Duplo Floor, And Every Building Project Can Achieve Unlimited Creativity. Provide This Convenient Game As A Birthday Gift Or Daily Gift For Children Aged 18 Months And Above.