1995ish Hybrid. A nice riding, tough, all purpose frame. I like them so much i have two 700s for my grocery getters. I think it has a Shimano cartridge BB, so get the splined tool, a long enough bolt and a washer to bolt it to the bb, and remember drive side is reverse threaded, so go to the right to loosen. Some PB Blaster penetrant may help too.

Also, it is likely the plastic spring retainers on the brakes are shot too, which are unobtanium. Cheaper to just buy a set of Tektro Oryx brakes and replace the entire brake caliper.

http://www.treefortbikes.com/product...t-or-Rear.html