Trevor D. says that while this tool isn’t amazing, it does work great and is one of this favorites around the shop. He writes: “Run the reamer/deburring tool along the edge of a motor’s mating gasket surface, around freshly drilled holes, leading edges of oil seal cavities, and so on and — bam! — you get burr-free edges insuring a perfect seal and gouge free entry of any parts that will go right past that edge. I use mine on steel, aluminum, plastic, you name it.”
The one pictured above is from Snap-on and is most certainly a nicer version than the decades-old one we have here. And, at just $30 it might be worth coughing up the cash for a quality version. If you’re looking for one on the cheap, though, you can find them (via the search below) starting around $6.