This package of Twist Top Lancets has been designed for use with Prodigy brand Blood Testing Glucometers but will work with most other lancing devices. Use these lancets as they are or with a lancing device (available separately). Each lancet features a twist-top, an ultra-fine gauge and tri-bevel tip. Please note, this is a package of 100 individual 28G twist-top lancets only. Lancers and glucose meters are sold separately. To use, twist off the protective cap. DO NOT use if the protective cap is missing or damaged. After use, discard the lancet in a puncture resistant container. These twist top lancets penetrate the skin every time and offer consistent depth penetration. Do not sore lancets in lancing devices and do no reuse lancets. Lancets are packaged sterile with a protective cap.