1. Material

· Shell: Safe, non-toxic ABS plastic, drop-resistant and durable.

· Roller Core: Wear-resistant rubber with clear, fade-proof math problem engraving.

· Internal Structure: Smooth rotating mechanism for jamming-free use.

· Transparent Cover: Clear plastic base to protect the roller and prevent ink leakage.

2. Dimensions

· Stamp Unit: 63 × 31 × 48 mm (L × W × H)

· Packaging Box: 84 × 82 × 47 mm (L × W × H)

· Compact, kid-friendly handheld size, easy to grip and carry.

3. Key Features

· ✅ One-Press Math Questions: Roll to print random arithmetic problems instantly, saving teachers/parents hours of work.

· ✅ Clear & Uniform Imprints: Sharp, legible numbers and symbols for consistent practice.

· ✅ Reusable & Refillable: Built-in ink pad design, easy to refill with stamp ink for long-term use.

· ✅ Kid-Safe Design: Smooth edges, non-toxic materials, and cute cartoon prints appeal to young learners.

· ✅ Smooth Rotation: Effortless rolling with no stuck or messy lines.

4. Functions

· Quickly generate endless arithmetic exercises (addition, subtraction, multiplication, division).

· Help kids practice mental math and calculation speed.

· Create personalized homework sheets or classroom activity pages.

· Ideal for daily learning drills to build math confidence.

5. MOQ & Customization

· Sample order: 1 unit

· Bulk wholesale and mixed color/design orders are welcome.

· OEM customization available (custom patterns, problem types, colors).

6. Application Scenarios

· Preschool & primary school math practice

· Teacher classroom teaching aids

· Parent home tutoring and homework training

· Stationery retail, educational gift sets, and kids’ learning supplies