This is a 1987 Vintage used Specialized Hardrock would make a great commuter, with a full overhaul and a few parts. New cables and housing would make a big difference, but don't forget the get the rattlecan of flat black - the paint is mostly gone and whats left is teal... The brakes do work well, and the U-brake is in excellent condition. The rims are relatively true, and they spin, so good there.
Needs: tune and some overhauling, new cables and housing, tires and tubes, seat or seat cover, and grips. Add fenders and a rack, some paniers and some spray paint, and its a stealth commuter.
Seat Tube: 18"
Top Tube: 21"
Stand-over Height - 29"