1.2-in-1 Design for Convenience: Experience the efficiency with this innovative tool that combines a thermal paper blackout roller with a retractable box tool. The integrated tool allows you to open delivery packages effortlessly, while the stamp head instantly conceals your sensitive information like tracking numbers, addresses, and personal details on shipping labels or receipts, protecting your privacy from identity theft. 2.Effortless Refill & Large Capacity: Designed with an upgraded 20ml storage tank, this device provides a longer lifespan compared to standard 10ml models. The improved two-part construction makes refilling the ink easier and cleaner, requiring only a simple twist to open and replenish, ensuring you can redact over 400 documents with a single bottle. 3.Compact Aesthetics and Durability: This tool is made of high-quality plastic and has a stylish design. It comes in three colors: bright yellow, soft pink and calm blue, and can match your working environment. Measuring 95 x 28 mm / 3.74" x 1.10" (for the full tool) and 70 x 28 mm / 2.76" x 1.10" (for the ink portion), its portable size fits comfortably in your pocket, desk drawer, or handbag. 4.Reliable Privacy Protection: Specially formulated for thermal paper, this broad-coverage stamp is ideal for obscuring sensitive data on various documents, including delivery labels, food takeaway slips, shopping receipts, and financial statements. Simply roll over the printed text to create an opaque, unreadable layer that keeps your personal information secure in seconds. 5.User-Friendly Retractable Mechanism: The built-in box tool features an intuitive, spring-loaded safety design; the tool automatically retracts when you release your thumb, preventing accidental cuts during storage. This thoughtful detail ensures both safety and accessibility, making it an essential companion for frequent online shoppers and office professionals handling daily mail. Package list: Box opener tool*1/Refill ink*1