I was given a set of Dia Compe brake levers. They have "1086" stamped inside them. The vintage Trek site indicates these would be from 10/86. The body of them is made from a hard black plastic. The levers themselves and the internal pieces are aluminum. The white hoods are labeled 'Dia Compe' and what looks similar to a small 'x' after Dia Compe. Any idea what model these are and what level of bikes they came on?

thanks

Joe C