McKesson Prevent Push-Button Safety Lancets feature an innovative design that provides a better way to quickly and comfortably obtain blood samples and deliver accurate, painless blood sampling at the touch of a button for efficiency and convenience which is reliability provided via optimized needle exposure of a 1.6 millimeter fixed depth to guarantee adequate blood flow. These lancets also have a gamma-sterilized, 28-gauge needle that is fully covered and protected with a sterility tab as well as a self-destructing activation mechanism. The electro-polished, silicone-coated needle with high puncture speed minimizes pain and facilitates healing for gentle fingertip sampling while the easy-to-handle, retractable design features an intuitive, 2-step operation with low firing force and no lancet loading required.