Description:

Type: Number Teaching Roller Stamp. Interesting teaching, let children like learning more.
Features: Rolling math questions appear instantly, easy to operate and very fast. It can develop kids' logical calculation ability.
Multifunction: Various algorithm questions, addition/subtraction within 100, adjustable flexibly, take your math scores next level.
Premium: Two styles(addition, subtraction), repeated use. Made of high quality plastic material, durable, small size and portable.
Reusable: The stamp is clear and the marks are durable, and it dries quickly. The package comes with stamp roller ink.

Specification:

Material: Plastic
Product Size: 7.6cmx6.4cmx3.2cm/2.99inchx2.52inchx1.26inch
Blot Size: 2.4cmx0.4cm/0.94inchx4inch

Package Includes:

1 Math Stamp
1 Ink

Note:

Please allow slightly errors due to manual measurement and different monitors.