Welcome to Giyblacko home themed online mall, improve the quality of life, come to choose beautiful and practical home goods!: Addition And Subtraction Teaching Seal Within 100 Plus And Subtraction Addition And Subtraction Rolling Seal Practice 5ML Ink Features: To give children a atmosphere, there are addition and subtraction teaching to choose from. Small and delicate, easy to store. The delivery includes ink, added ink, recyclable, and print 20x4mm. A good partner for learning and growth, rolling math problems appear in front of you, easy to operate Adjustable, Add ink and use it repeatedly Still manually writing addition and subtraction questions for your child? “Addition And Subtraction Seal Arithmetic Artifact” roll gently and the math problems appear immediately. Advantages:Addition and subtraction 2 styles, to choose. Roller design, combined adjustment. Add seal ink, which can be used repeatedly. Efficient and fast give practice questions, no , no fading. Rotate to adjust 10 different count methods. Product Description: Material:pvc Size :4.4x3x4.8CM color:Multicolor High Quality: The quality of the products is very good, are the selection of better materials. Versatile: The products are suitable for all parts of the home to meet your diverse life needs Decoration: These household items make your home more comfortable and clean, and dress up more beautiful. Gifts: Merchandise is a great gift for family and friends, but also for various holidays, such as: Christmas, Halloween, Bee Day, Independence Day, Valentine's Day, etc. Satisfactory after-sales service: If you have any questions at the time of purchase or after getting the product, please contact us in time to serve you 24 hours to solve the problem.