Adjustment Lever: A 360° "All-Around" pneumatic height adjustment lever that allows you to quickly adjust the pneumatic stool height from anywhere you reach under the seat. Tracking info of your parcel is available.We will leave feedback upon receipt from customer. If you are dissatisfied for any reason, please don't be quick to leave negative/neutral feedback or open a dispute. We're one of the largest online dental suppliers based on many qualified manufacturers in china. We supply all dental items with very nice qualities and the best reasonable prices for worldwide dentistry students, dentists, and other professionals. Any interests or questions, please do not hesitate to send message. Looking forward to our friendly & win-win cooperation. The sale of this item may be subject to regulation by the U. Food and Drug Administration and state and local regulatory agencies. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical, Lab & Caregiving Furniture\Dental Examination Chairs". The seller is "baistraworld" and is located in this country: US. This item can be shipped to United States.