Note: the turbine unit needs to be connected to Air Compressor for working! The height of the backrest can be adjusted to meet different needs. Durable, waterproof and flexible fabric. Thickened, widened and enlarged design.Waste basin and basin support. Flushing system and Water supply system (connect water tap). This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical, Lab & Caregiving Furniture\Dental Examination Chairs". The seller is "popdental" and is located in this country: US. This item can be shipped to United States.