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 Pen Material: Stainless Steel Color: As Pictures Show Length: Approx. 12.8cm / 5.0inch Diameter: Approx. 1cm / 0.4inch Package List: 1 * Blood Lancing Pen 1 * User Manual Note: Need to use with disposable blood collection needle, which is not included in the product.Safe to Use -- Adjustable depth, can be adjusted according to individual needs, convenient and practical. By reducing discomfort and fear, we provide the most comfortable blood collection experience required for blood testing. One Time Use -- Strong spring with high resilience, long service life and no needle sticking. To avoid accidents, each needle instrument is used once and discarded after use. Dispose of discarded needles properly. Stable Performance -- The lancet is made of high-quality stainless steel and will not jam or shake, which ensures stable performance and durability. The blood collection pen is for personal use only and cannot be shared by multiple people. Easy to Operate -- Just need to press the button to collect blood. It is a very portable blood collection device. Let you no longer be perceived and squeezed by fear, free yourself from pain, and take blood from all over your body. Rebound Design -- Automatic rebound and slight pain, reduce the time staying in the skin, safe to use. Get consistent blood volume in a few seconds while avoiding painful nerves.Best Sellers Rank: See Top 100 in Health & Household. : B09D3WD14P. Manufacturer: Tgoon. Date First Available: August 19, 2021. Product Dimensions: 0.39 x 0.39 x 0.39 inches; 2.4 Ounces.