I just got it and made a 110mm hole in a stone wall. Strong and sturdy machine for its price. I also bought an adapter to 1 1/4" that I saw from other users and that gave me extra length (almost 60 cm) and flexibility to use a core bit from another brand. The instruction manual is very poor but ok. 4 stars because I still have many holes to make and I will come back later to check its durability

Two stars because the diamond crown doesn't lock when it gets stuck in a hole and if you don't screw the base down, the whole machine turns.

I have used it several times so far... With a little care it will do its job as it should... It is value for money....

Very powerful machine

I have enjoyed it quite a lot, a very useful tool.

Very good tool for its price with a 105mm cup on 45 points concrete with reinforcement, it didn't leave anything bad except that I had a 35cm cup length and it worked a little with the compressor, but overall satisfied.

I give it four stars only because it has had minimal use and I will leave further impressions for the future. However, the tool easily did its job with a 150mm diamond core drill from another company that cost less than the Ingco. In 22cm concrete with 8 cut rebar, it took a total of 6 minutes. I was impressed that the machine didn't even heat up. Very satisfied! The price is unbelievably low for such a tool. Here is the video showing its use: https://www.youtube.com/watch?v=0Xnp2Kq9_Og