Thank you very much for viewing. This is an adapter to attach to the tip of an activator. It is a tool used in chiropractic and other fields. This is for one set. The second photo is a reference photo. The main body is not included, so this is an adapter-only listing. I do not have expert knowledge. Please make your own judgment regarding attachment, as there is no support provided. Thank you for your understanding. As there are individual differences in the perception of scratches and dirt, please refrain from bidding if you are concerned. In addition, bids from those with negative feedback, those who are likely to cause trouble, and new users may be canceled and blocked to prevent trouble. Please understand that you may not be able to purchase this item. I do not negotiate prices, so please purchase as is.