Lancets can be used universally with VivaGuard Lancing Device and also with the most popular Lancing Devices available, and consist of a small, sharp, sterile needle that pricks the skin so a drop of blood can be collected. 30G Lancets with extra sharpened needlepoints to minimize the discomfort of finger pricking.Designed to fit most commonly used Lancing Devices.Additional gauges are available upon request.Convenient storage with 5-year shelf life.