YiFudd Addition and Subtraction Teaching Seal Students within 00 Addition and Subtraction Practice Questions Rolling Seal

Addition and subtraction teaching seal students within 00 addition and subtraction practice questions rolling seal（5ml） feature: Addition and subtraction 2 styles free to choose. Roller design combined adjustment. Add ink reusable. Simply the button to change the question Give practice questions efficiently and quickly without smudging or fading. random questions Small and exquisite easy to carry. Product parameters: material: plastic Size: 4.4x3x4.8cm Printing speed: 2x0.4cm Model: Addition (blue) Subtraction (pink) Packing list: x Addition and Subtraction Arithmetic Artifact (Includes Ink 5ml)