1、304 stainless steel material makes it corrosion resistance. Exquisite workmanship, durable to use. 2、Good mechanical properties, easy to use with heat resistance and low temperature strength. 3、50N / 100N / 150N / 200N / 250N / 300N 6 strength, effective massage effect. 4、Suitable for home massage for everyone. 15 minutes a day can reduce the pressure on the neck, good effect. 5、Lightweight, safe, durable, portable, sturdy, Body massage can provide stable and powerful strength. Condition: 100% Brand New Item Type: Spine Correction Massager Material: Stainless Steel 6 Strength: 50N·100N·150N·200N·250N·300N Functions: Body massage: provide stable and powerful strength, more effective, more comfortable massage, suitable for scoliosis, thoracic vertebra and spine pain, can be used for joint relief, cervical vertebra adjustment, thoracic vertebra massage, cervical vertebra massage, whole body massage healthy care Physical pressure massage principle: imitate the hand massage, adjust the bones, straighten the spine, immediately dredge upright, relieve pain, make people energetic.Contact with the skin below 2.3cm, effectively adjust the bones, massage once, make the relaxation time longer.Will provide stability and strong power, more effective, more comfortable Instructions for use: 1. When using, do not hit the air, and the rubber head must be strong. 2. Adjust the bottom according to the use needs Operation instructions: 1. Place the handle on the palm of your hand.Place the rubber head on the part to be punched and apply force downward.Pull the black portion of the position into the palms of your hand, then pull back and forth. 2. When using high frequency frequently, add lubricating oil appropriately. 1 x Spine Massager 2 x Rubber Heads 1 x Storage Box 1 x PU Leather Cover