Does PCBA have the ability to solder 6 inch wire leads off the PCB?

I haven’t seen this in the forum or FAQ. We’re wanting our assembled boards to have four 6 inch wire leads soldered on to the board. Each wire would be soldered to a through hole and the other end will be untouched for our own assembly. If that type of request is supported, how do we specify this requirement? And is there a pre-defined cost for the type of requirement?