High quality: The test sticker is printed on high-quality paper and can be easily written with a ballpoint pen, pencil, or marker. Paper is durable and not easily broken.Packaging includes: The test date and initial size are 0.75 "x 1.5" (19.05mm x 38.1mm), with a total of 500 sheets in one roll.Widely used: very suitable for manufacturing, production, and assembly lines, warehouses, used as inventory stickers, quality control, QA approved, QC approved labels, calibration stickers, maintenance stickers, etc.Clean black contrast, looks simple and clean, clear at a glance.QUALITY CUSTOMER SERVICE: Any question about products or orders, please feel free to contact the customer service, we will try our best to solve the problem.