Specification: Condition: 100% brand new & high quality Material: Plastic + metal Size:As the Pictures Shown How to use the cupping device: 1. Before use, lift the valve stem on the upper end of the tank to ensure that the gas is unblocked. 2. After the vacuum pumping muzzle is placed on the upper end of the tank, the rod is pulled vertically four times to reach the appropriate negative pressure. When using the end can, gently lift the upper stem of the can and the cooker can be removed. 3. After using the can, use the medical cockroach to open the disinfectant and wipe it. Do not cook it. Do not use safflower oil as a lubricant when walking the tank to prevent damage to the can. Package Included: 1Pcs * Cupping pump Note: 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2.Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement.