4045 Roller Digital Teaching Stamp, Addition and Subtraction Roller Stamp tray It is neither too soft

It is neither too soft

It will be the good choice for gifts

Robust and Elegant Ergonomic Design

The wires and LED are IP44 waterproof

4045 Roller Digital Teaching Stamp, Addition and Subtraction Roller Stamp tray It is neither too soft4045 Roller Digital Teaching Stamp, Addition and Subtraction Roller Stamp Description : Adjustable numbers, gently rolling, can efficiently and quickly print out math practice questions within 100, it is a fun and meaningful gift for your children or friends' children! Rotate and adjust the column, and 10 different queuing methods can be adjusted. Satisfy all addition and subtraction numbers from 1 100, and cultivate children's logical calculation