Lancing devices are critical tools for obtaining blood samples for glucose measurement, and the 100-Pack MyGlucoHealth Ultra-Fine 30-Gauge Sterile Lancets are ideal for use within the device. The lancets fit inside the MyGlucoHealth Lancing Device, which helps to reduce pain and discomfort for those with diabetes. That"s because the device features one-handed operation with the press of a button, just like a ballpoint pen. Included in the pack are 100 sterile lancets that are 30 gauge.