These sterile twist lancets fit most testing and lancing devices for capillary blood sampling. The tri-bevel tip is ultra sharp for virtually painless penetration that is consistently 1.8 millimeters deep to produce uniform results after every stick. The sterile lancets are a single-use product which are disposed of after use. The needle comes in two sizes of 28 gauge and 30 gauge, which allows the user to choose the most comfortable experience. It does not contain any natural rubber latex and is safe for those with sensitive skin or latex allergies. The lancets are safely housed in a testing device and the top twists off at the last minute to avoid accidental needle sticks. The push-button activation makes diabetic testing safe, easy, and consistent.