· Munbyn Generic Rectangle Series Labels (GR)--(57.15mm)2-1/4" X (31.75mm)1-1/4" (1,000 labels/roll, 1 roll), paper tube diameter: 1.26"(32mm), paper roll diameter: 3.15"(80mm)· Strong Compatibility: The printer labels are perfectly compatible with MUNBYN 941BP, 941U, 129B, 30B and other direct thermal printers. (Not compatible with Dymo and Brother)· Paper Properties: Thermal printer printing use, handwritable. No ink toner or ribbons are needed· Use Advantage Collection: Thermal label paper with clear printing, strong self-adhesive, waterproof, and oil-proof, writable· No BPA& BPS: Non-polluting, can be used by any group of people· Wide Applicability in Life and Business: The thermal label can be used for thank you stickers, brand design, DIY design, QR code printer label reminder tags, classified labels, inventory, size labels, laboratory number labeling, sorting your shoes, bags, and clothes, etc