Features: 1.Plastic materialhealthy easy to cleanuse the rest assured 2.Rebound designto achieve a number of needle 3.Minimally invasive painneedle speed, reduce pain 4.Depth adjustable5 file depth can be adjusted You can choose the position of the blood collection pen according to the roughness of your finger.depth can be adjusted The blood collection pen uses environmentally friendly materials to ensure your health and safety. Minimally invasive technology: When you use a blood collection pen, you will hardly feel pain and reduce your psychological burden. Specifications: Type:Lancing Device Size: 10cm/3.94in Package Included: 1pcs * Blood Sampling Pen Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2. Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement. 3.Timely disinfectionWipe the pen and cap with alcohol 4.For your health, it is recommended to replace the blood collection pen/blood collection device regularly to avoid cross-infection of bacteria.