Feature: 1. 304 Stainless Steel Material: Manual chiropractic tool uses 304 stainless steel material, which is corrosion resistant, strong and durable, and will not be damaged after a long time of use. 2. Portable: Manual chiropractic tool is lightweight, portable, safe, durable, and sturdy home massager, suitable for everyone in the family to use. 3. Neck Pressure Relief: Using a 15 minutes massager every day can reduce the pressure on the neck and is more effective than chiropractic. It is a very practical massage device. 4. Strong Strength: The latest spring technology is adopted, with strong strength, smooth hitting, good heat resistance, good mechanical properties and low temperature strength. 5. Easy To Use: The handle of the manual chiropractic tool is easy to pull up, and girls can also operate it, but the massage is very powerful and can meet your needs. Specification: Item Type: Manual Chiropractic Tool Material: Stainless steel Product Size: Approx. 15.5 x 8cm / 6.1 x 3.15in Function: 1. Body massage: provide stable and powerful force, more effective and comfortable massage, 2. It is suitable for scoliosis, thoracic and spine soreness. It can be used for joint relief, cervical spine adjustment, thoracic spine massage, cervical spine massage, and body massage for health care. 3. The principle of physical pressure massage: imitate human hand massage, adjust bones, straighten the spine, straighten up immediately, get rid of pain, and make people refreshed and energetic. It can be in contact with the skin under 2.3cm to effectively adjust the bones and massage once to make the relaxation time longer. Will provide stable and strong power, more effective and more comfortable Strength Adjustment: 30N, 60N, 90N, 120N, 150N, 180N, 210N, 240N, 270N, 300N Adaptation symptoms: 1. Neck syndrome: headache, dizziness, insomnia, restricted neck movement, neck pain, numbness of the arm, neck movement disorder. 2. Chest syndrome: back pain, shortness of breath, loss of appetite, gastrointestinal disorders 3. Lumbar syndrome: acute and chronic low back pain, lumbar disc herniation, numbness of legs and feet. 4. Pelvic syndrome: sacroiliac joint subluxation, sciatica, toes 5. Scoliosis: prevent traditional spinal health degenerative diseases. Contraindications: 1. Eyes and surrounding areas, myocardium, spinal cord, gonads, kidneys and liver. 2. Blood diseases, coagulation problems or the use of anticoagulants. 3. Polyps in the treatment field. 4. Thrombosis. 5. Tumor diseases. 6. Polyneuropathy. 7. The growth of cartilage in children. 8. Use fatty alcohol treatment. 9. Not suitable for areas close to large nerve tracts, blood vessels, spinal cord and head. 10. Major diseases such as heart disease, diabetes, and pregnant women.. Package List: 1 x Manual Chiropractic Tool1 x Storage Box1 x English Manual2 x Rubber Cover5 x Rubber Rings3 x Function Head