$30 · DeWalt model TR-1254 Saber Saw

Original accessory for a radial a saw. Design is specific to DeWalt and black and Decker, but likely will fit any saw? Comes with instructions, an original set of blades, the dust blower tube, and the unit itself. Unit is tight, hit definitely needs to be taken apart and have the original factory lube removed. It's solidified. It still moves, but is stiff. I have taken it apart, to check, and I don't think it's been used. Great for a collector, or maybe something else?