I bought this to level and smooth some very rough concrete substrate from a tile tear out on a porch. I ran with water to help cool and stop dust. It seems still has lots of life in it. Made a nice exposed aggregate finish, but pretty smooth.

I have not used it yet, but the products looked really good and arrived quite fast. Can't wait to see how they perform on my concrete floor.

I doubt that the tools will not last long to work at this price, but I nearly have finished grinding the old garage floor, and the tools show no signs of damage to stop grinding. Excellent value for money.

Great! I was satisfied with the grinding effect so far.

I purchased the grinding heads to grind off the thinset after ripping up old tile. And they match my polar magnetic system machine. Worked fast and did a great job on the surface.

All I wanted to talk about this product is its long-lasting durability. This product has longer working life than other competitive tools.

Products grinding down the uneven concrete quickly and smoothly. I'd recommend this product to my friend who needs to grind concrete.

These diamond grinding heads fit well with the polar magnetic system machine.
Fast grinding and smooth grinding.

I have an old Polar Magnetic system grinder, it is my second time to order diamond tool from DTS. The Tools arrived in time and performs as expected. very good value.

I had an old grinding machine with Polar Magnetic system, these Polar Magnetic Grinding Heads had a very great cooperation with my machine LOL, grinding fast and left a lot after a small job. Good tools and recommend it!

Great product. Grinds fast. So far great results with 3 hour of use.

I've been really impressed with this polar grinding tool. Seeing that many different ones were for sale on the site, This tool fit my machines and did the job and lasts long. I like it a lot.

This Polar Grinding Tools made quick work of cutting concrete surface. It is very aggressive. I like them.

Did not try yet, but looks well. Well packed and arrived quickly. Thank you.

Looks very qualitative. The diamond pads are very thick. I'm satisfied.

I have no idea how these are so cheap. Grinded down my 300 SF garage to prep for epoxy.

Super fast, person serious, parcel arrived well packed, goods tested.

I purchase this to grind off the thinset after ripping up old tile.It fit and did a good job.

This grinding heads are awesome, we use them to finish a concrete floor and the results is good.

Worked very well for as inexpensive as it is .