ONE-CARE Safety Pen Tips are designed for intuitive, everyday handling with no special preparation required. The clear protective shield allows visibility of the tip during priming and automatically covers the tip before and after use. The built-in safety mechanism engages smoothly and permanently locks after use, helping support safe disposal. Visual and audible indicators, including a click sound and the disappearance of the color-coded activation marker, confirm successful lock-out. High-quality, ultra-thin, electropolished tips support smooth flow and gentle surface contact, providing a comfortable and reliable user experience. Compatible with most pen-style devices. Packaging may vary.