Key Features of 2023 Hot Sale 2-in-1 Addition & Subtraction Teaching Stamp Roller
Durable ABS plastic construction ensures long-lasting use and smooth rolling action. High-precision engraved digits deliver crisp, smudge-free imprints for clear math practice. Dual-function design combines addition and subtraction stamps—flip the roller for instant operation switching. Self-inking mechanism requires no separate ink pad for mess-free learning. Perfect for homeschooling, classroom drills, or travel math games. Compact size fits pencil cases for on-the-go practice. Bright colors and child-safe materials (non-toxic ink) meet international toy safety standards. Ideal for ages 5+ to boost mental arithmetic skills. Wholesale bulk pricing available—stock up for back-to-school or educational resale. Globally compliant packaging (CE/FCC certified). *Note: Ink refillable for extended use. Includes 1 roller + demo paper strip.*