Features: 1. Strong spring with high resilience, long service life and no needle sticking.2. Automatic rebound and slight pain, reduce the time staying in the skin, safe to use. 3. Adjustable depth, can be adjusted according to individual needs, convenient and practical.4. Stainless steel material, which ensures stable performance and durability.5. Easy to operate, just need to press the button to collect blood.6. Wide range of applications, such as cupping drain blood, acupuncture, massage, physiotherapy, etc.Specification: Item Type: Blood Lancing PenMaterial: Stainless SteelColor: As Pictures ShowLength: Approx. 12.8cm / 5.0inchDiameter: Approx. 1cm / 0.4inchPackage List: 1 * Blood Lancing Pen1 * User ManualNote:Need to use with disposable blood collection needle, which is not included in the product.