Feature: 1. The whole is made of 304 stainless steel, which is corrosion resistant, not easy to rust, and durable. 2. Heat resistance, low temperature strength, good mechanical properties. 3. 50N / 100N / 150N / 200N / 250N / 300N 6 levels of strength, effective massage effect. 4. Lightweight, safe, durable, portable, superb craftsmanship, suitable for everyone. 5. 15 minutes a day can reduce the pressure on the neck and enhance physical health. Specification: Condition:100% Brand New Item Type: Manual Spine Adjuster Material: Stainless steel The six strengths are: 50N·100N·150N·200N·250N·300N Features: Body Massage: Provides stable and powerful strength, more effective and comfortable massage, suitable for scoliosis, thoracic and spine pain, can be used for joint relief, cervical adjustment, thoracic massage, cervical massage, and body massage. Principle of physical pressure massage: Imitate human hand massage, adjust the 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. Instructions for use: 1. When using, it is forbidden to hit the air, and there must be a strong point on the rubber head. 2. Adjust the bottom according to usage needs. Instructions: 1. Put the handle of the bone setting gun on your palm. Place the rubber head on the part to be hit and apply downward force. Pull the black part of the position onto the palm, and then pull back and forth. 2. For frequent use, please add lubricating oil appropriately. Package List: 1 x Manual Spine Adjuster 2 x Rubber Head 1 x Storage Box