Vivitar 135mm f/2.5 and Vivitar 28mm f/2.5 TX universal mount lenses with both Canon FD and M42 interchangeable mounts. Both lenses are manufactured by Tokina for Vivitar. M42 to EOS adapter included so BOTH lenses can also be used on Canon DSLR, Canon FD, or M42 mount cameras. You get 5 items for $100:
Vivitar 28mm TX
Vivitar 135mm TX
TX Canon FD mount adapter
TX M42 mount adapter
M42 to EF adapter