I recently ordered a reverse ring and turn out i ordered a wrong one. My camera is 7100 but i ordered D700 from ebay, i bet it won't be exchange but can i order something else to put it on my lens, so it make use for reverse ring 72mm for D700 use for my D7100?
Nikon doesn't make any 72mm or 67mm reverse rings though you can find it from third parties (72mm for example).
I will point out that lenses that use a 72mm (or 67mm) thread are not likely good candidates for using as a reversed lens. These are likely either zoom lenses or very wide. They are not likely designed to take the weight of the lens on the filter thread.
You would likely be much better off with the BR2A from above and a Nikon 50mm f/1.8D lens. The D is important because it still has the f/stop ring and so you can manually stop down the lens. With lenses that don't have the f/stop ring (G lenses) you will find that you cannot change the f/stop on the lens after you have removed it from the camera.