great for tapering sharp edges off bolts and screws.

we never have the luxury of working with only new bolts and screws. This product eliminates the frustration of trying to start threading nuts on used or abused bolts that have been dropped or miss-started and not deburred. Filing doesn't remove material evenly. This tool does an excellent job of providing a smooth, consistent chamfer for effortless bolt - nut engagement.

These are designed correctly! They cut a chamfer and don't rub a burr. In addition, they are a great value compared to many other tools in the market. So why did I give them only 4 stars? First, these must have come out of a casting because you can see where the flashing was removed from one side. Why is that important? On to the next point: they wobble. I've tried chucking 'em up every way: deep, shallow, middle shaft. They wobble no matter where you hold them probably because they are cast and sharpened but not machined on a center. I come from a tool making background, so seeing a cutting tool run out of true makes me cringe. Aside from all that, THEY WORK! Just run them slow like you would any counter sink. I may purchase these again, but I've cut a lot of steel in my day, and I know when a cutting tool runs out of true excessive wear takes place on the high side and prematurely wears the tool out. I'll just have to see how these hold up.

very decent quality, used it during the remodling of a fixer upper we bought last fall

Love that it chucks into my impact driver! I used it to shorten a couple of 3/8 bolts. Did the job perfectly and no trouble getting the nut screwed on. Hope I don't lose it, it should be very helpful when needed.

I have only used it once on 2 steel bolts that are at the limit of the small size for this tool. With a Works cordless drill at the slowest speed I could command, the deburring chamfer tool cut a nice taper end into those bolts with minimal effort on my part. They treaded perfectly in the part where they belong. Good product that I can't wait to use on other projects. No comment yet on the lifespan of the cutting edge.Claude

Use it on the slow setting and it works perfectly. Nice to have in any toolbox.

Not really sure what this does, but my brother was super excited to get this as a gift. He loves it. Arrived on time.