Except the down framework, the transmission parts and some parts that must be made of special materials. Other spare parts are made of stainless steel 304.
The gripper is made of stainless steel, the position where hold the bottleneck is also made of stainless steel, compared with the traditional rubber gripper, it is much hygiene, durable, and no quick-wear parts, the screw parts of the bottleneck can avoid being polluted by the rubber gripper.