Wensilon Concrete Drill Bit 5pcs 3/8" X 6"-4" Cross-Type Double Thread Carbide Material Suitable for Concrete, Brick, Cement Walls, Stone, Hammer Drill Bits for Concrete

Great product. Cuts fast stays cool and lasts long. Happy with this and would buy it again

This bit did its job well. It cut through concrete like it was barely there. I drilled 12 holes in 5 in thick concrete.

Incredible value for the money. I needed to drill a 3/8" hole thru 10" cement block to run a water line. These bits are by far the best concrete bits I have ever used. They have a star shaped carbide bit that cuts quickly and accurately. These bits also have a type of shaped end that fit into the drill chuck no problem. I used a standard 1/2" hammer drill and these bits really cut fast. It did not matter if it was thru mortar or block these bits cut thru with ease. The price is for 3, don't be fooled into thinking they have to be junk because the price is so reasonable.

It really did a pretty good job. I was drilling and epoxy setting anchors into sonotubes footers for a Versatube tractor shed. Drilling with a 1/2” then 3/4” the full depth. 16 posts and they’re still usable! Brazing was a little ugly, but it worked. Dust removal wasn’t as good as the Milwaukee bit, but it also cost 1/3 as much

Works as expected. No complaints. 25 holes drilled and first bit is just as sharp as before I started.

I had about 20 holes I had to drill in concrete. Bought these hoping that I wouldn't need to buy more bits to get the job done. Did it with just one bit, and it was still drilling well on the final hole. One thing....these are SDS bits. I didn't know the difference. I have 2 hammer drills but neither are SDS. These bits don't work well in conventional drill chucks.

Looks solid but haven’t used it yet.good price

My understanding is that concrete is a mix of cement and aggregate, at least that's what my curbs are made of. These bits a dull from the get-go. They do not have sharp tips and made very slow progress. After failing to drill two 2" deep holes I bought a single Milwaukee concrete bit (which has a sharp cutting tip) and it finished the job in a couple of minutes. Definitely a case of quality over quantity.

Awesome, drill into reinforced concrete like butter. Compare to Makita 4mm drill bit at 50mm(110mm total) in length, these 4"/100mm(150mm/6" total) drill faster with less resistance. Also, the CONFAST 3/16" concrete screw broke when screwing into the hole drilled by the Makita 4mm drill bit. Might be the Confast screw is lousy or the 4mm hole is too big? But 5/32" IS ‭3.96875‬, ‭ ‭0.03125‬mm smaller than 4mm, I don't think that would made any difference. I would say these drill bit created cleaner hole for the 3/16" screw to bite on. I was kind of disappointed with the first concrete screw I ever tried as it broke but these work wonderfully, Highly recommended!