7PCS Countersink Drill Bit, Mgtgbao Titanium Plating Drill Bit Set Wood Drill Set Woodworking Countersink Chamfer, with One Hex Wrench for Wood Drilling or Woodworking Chamfer, 3-10mm Screw Size.

I purchased these countersink drill bits for a project I'm currently working on and I couldn't be more disappointed.I used a couple of bits and the first round seemed OK, but didn't cut as well as I had hoped. The next bit I used, I was able to drill about eight holes before I could no longer even penetrate the plywood I had been drilling. The bit literally burned a circle on the top layer, but would not cut. I ended up pulling out a cheap Black & Decker bit that I've had for decades and used on just about any sort of surface you could imagine and zipped right through the wood and finished that project.These have to be the worst drill bits I've ever used; I've bought throw-away bits that worked better.Unfortunately I bought them ahead of needing them so I guess I'm stuck with this junk. Don't make my same mistake.

The 3mm broke in half after using it 30+ times. Just broke. No undue stress, just 1" clean yellow pine. The 4mm bent half way up the shaft the first time I used it. A slight bend but enough to make it useless. I have thrown out this kit. Got a nice little gouge on my thumb from the bit that broke. Very soft bits.

The smallest 2 bits in the set wobble in the drill press. Center spur point of the smallest bit is off center! Small birch workpieces vibrate and accuracy suffers as a consequence. Larger bits cut clean flat bottomed holes. Nice. We get what we pay for.Update two weeks later: Seller sent an entire new set of bits! Proactively sought to correct the problem.

These countersinks make drilling holes for furniture so easy. No more worries about having any screwheads sticking up in th finished product.

I rarely write reviews and find few that are truely helpful. These were clearly used when I got them. There were tool marks on four of the bits. The 3mm drill bit was twisted rendering it useless. Neither the 8mm or the 10mm drill bits were sharp enough to cut drill holes in 3/4 oak lumber. The packaging show signs of water damage and the presence of heavy oxidation on all drill bits.

Junk. You just can't get a full set for 11 dollars and expect them to be any good. My bad for thinking you could

Absolutely the biggest piece of crap I ever purchased. whoever made these, should be shuttered and closed!

Good item. Dies the job. For the price you can beat this set. If your an occasional home wood worker or you need upgrades then this is for you.