This is a coupler for a-dec style dental handpieces. I got it in dental school and it has been in storage since 2012. I just tested it in my office and it works great.
Please message me if you have any questions. Just check out my other listings. The item "W&H A-Dec Coupler RQ-24 for Dental High Speed Handpieces" is in sale since Monday, January 09, 2017. This item is in the category "Business & Industrial\Healthcare, Lab & Life Science\Dental Equipment\Handpieces".The seller is "tcdraper" and is located in Lynchburg, Virginia. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, SE, KR, ID, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, IL, to New Zealand, PH, SG, to Switzerland, NO, QA, KW, BH, HR, MY.