"He who marches out of step hears another drum." ~ Ken Kesey
Do you mean the Stretch Devices "Constant Force Squeegee"?
That would be the Smilin Jack Squeegee. It has a cut groove on the backside. Prints better than a normal squeegee as the load on the squeegee material is altered so the blade pressure is consistent across the width of the blade. Theirs also the really thin curved blade, can't recall the name of that one.