Get the ultimate versatility for your general-purpose lab labeling with the Twin-Tip Teeny Writer. This convenient marker features two different tip sizes in one pen: a fine tip for standard writing and an ultra-fine tip for detailed notations on smaller labels. The permanent black ink is perfect for clearly marking tubes, boxes, and tags for samples that will be stored at room temperature and will not be exposed to harsh chemicals. Key Features & Benefits Dual-Tip Design: Features a fine point on one end for bold, clear writing and an ultra-fine point on the other for detailed labeling on small surfaces. Permanent Ink: The black ink provides lasting, high-contrast marks for reliable, everyday sample identification. Versatile Use: The perfect all-in-one marker for a wide range of general laboratory labeling tasks on plastic and paper surfaces. Ideal for Room Temperature Storage: Designed for samples and materials that will be stored at ambient temperatures. Economical & Convenient: Combines two pen sizes into one, saving space and providing a great value.