4" Air Wet Polisher Grinder, 4500 RPM Pneumatic Tool for Stone & Concrete

First off, this tool is excellent. I used it to finish the side edges on 7 pieces of quartz stone for trim accents around some custom showers I installed. I have used other grinder/polishers but this was a far better tool for my application. What I appreciated most was the lightweight nature of the tool. I used it with a 29 gallon air compressor. This was a little light for the application, if I had a bigger compressor it would have been better (less waiting between passes for the air pressure to increase). But it did the job and no one would be the wiser that I didn't hire this work out. Doing this on my own saved me a considerable amount of money on fabrication and after a few YouTube tutorials I was ready to go. A couple notes of caution - you likely won't be able to use this right out of the box unless you have a barbed adapter to connect to the fittingless end of the supplied water line. This was a bit of a frustration but was quickly remedied with approximately $10 in fittings from my local big box hardware store. Note I also splurged for a 10ft 1/4" water line hose so that I wouldn't have the weight of a garden hose hanging off the end of the tool. With my plumbing all sorted out I knocked out the work in less than 8 hours and general cleanup of the tool was a breeze. Definitely worth the investment.

The surface of the processed polished stone is very good in using, the noise is small, and it’s very efficient. Because of reasonable design of structure, so it’s very suitable for us to use in the stone processing process for a long time, the quality performance is superior, and it can finish well.

The item is good quality, but be prepared to go to the hardware store for some connections to hook up the water to your garden hose, and also for the air, if you want to be able to easily disconnect the polisher. Also, don't order this item if you don't have at least a 30 gallon compressor that has high CFM, as you will have to stop every 60 seconds to wait for your compressor to catch up. I found this out the hard way, and ended up buying a bigger compressor, but in hindsight I would've been better off with an electric model.

I have used every air polisher from Alpha to Weha. Spending over $400 for a single unit. This polisher is identical to the Weha in weight, componants and shut-off knobs. I highly recommend this tool.

Works great very high rpm

The tool seems sturdy well made; however, please note that it requires a large air compressor to operate. A smaller shop or portable compressor is not powerful enough to keep it going for polishing. Your compressor must supply at least 16 CFM to operate the tool properly!

Garbage don't buy

You have to supply your own connections it’s not user ready