5 pcs Countersink Drill Bit Set，82 Degree Counter Sink， Fit for Sink Holes into Most Machinable Metals, Plywood, Softwood, Hardwood, Fiberglass Plastic, Mild Steel

The box which these were contained within was very sturdy and helps when being stored.The bits were sharp and cut well. I really like the ability to swap them in and out quickly with the quick-disconnect.Overall, I'm very pleased with these pieces and would recommend them.I'm not a high production capacity shop, just a small time fabricator, therein, these are perfect for the price and function.

I like that there are multiple sizes. They work well.

They cut a clean hole. I predrilled the holes I wanted and used these to ream some mesquite at around 3000 rpm. Nice results. The case has a little plastic window that was shattered from Amazon's deteriorating shipping methods so that was pretty much worthless by the time I received it. The bits are good so far.

Work well to counter sink screw heads into various wood projects.

I’m using mostly for wood and soft metal, works good. Love the case, stores in my drill kit very well and can find it easily especially when I’m at my work bench

Works great . Thanks

I like that these come in a case for transport. I bought these and have used them on maybe 4 occasions over the past two months. They work very well and are better and cheaper than the current inventory in the big box stores. They make really nice countersink holes for screws to sit flush or under the surface of the wood.

I bought these specifically for the hex shank hoping to be able to just use with a screwdriver to quickly ream out for screw heads in drawer pull mounting. Not quite sharp enough for that in maple, but would be in a softer wood. Worked well when I used in a drill as they were designed to be used. Only complaint is the case was scratched up because the person that packed it had two of the bits in the wrong cutouts so they shook around in transit scratching the clear lid. Purely a cosmetic issue, so no big deal.