Rocaris 8 Pack Titanium Coated HSS Twist Drill Bits, 3-10mm Serrated Side Cutting Drill Bit Woodworking Tools for Plastic Metal Wood Hole

They are so handy. I use them in a die grinder for aluminum and they stay sharp for a long time.

You know the drill , these are cutting edge bits. Good size, cut through stucco and now I have to do patch work which is fun. These are a bit large although some are a bit small which is perfect for all uses. Fit you drill if it is a regular drill like the kind you already own as most people own as well .

Good item

As a mechanic I have to Reem out plastic and thing metal all the time, these come in so handy. Stury, we'll made and last.

Cheap quality bits. Used a small bit for the first time today. The bit snapped in half in the first 5 to 10 seconds of use. Slow speed setting on a Ryobi drill. Surprised me that the bit snapped so easily. Poor quality

For some reason the thin bits are breaking off way too easily, I’m guessing they are not made from a strong material

Have used these twice already and worked well both times. Would buy them again.

Several broke while I was drilling out the rubber in some car bushings. The largest size were fine, so I left it two stars but I had to drill pilot holes to use them. I started drilling the bushings with two sizes down and it snapped on almost immediately, and then next size down (i.e., the second largest) which looks substantial, snapped almost pretty quickly. So, pretty much a fail in my book.