These are very nice knock-offs of the Shimano Ultegra/Dura-Ace hardware, but a lot less expensive. I don't know how good or bad the Tektro rubbers are...I'd replace 'em with the Dura refills right off the bat. These make a very nice upgrade to older caliper brakes.
Note These shoe holders have narrow mounting hardware which will fit many pre-2000 Campy brakes.