Not something i realised until i tried them with my 35mm 1.8 that doesn't have the aperture ring. I guess you could sell them on and get the ones with the contacts. About a hundred quid i guess. or you could buy the 50mm 1.8 for a hundred, which will work with the manual tubes. cheaper than buying a macro lens and those tubes are pretty good with it. You would also have a dam fine 50mm fast prime lens. you would only be able to manual focus with it though on the d60 mind. Tough decisions.....
hope this helps.