If I want a greed, I want something that Thunder can use every corner, but I am satisfied even now.
I think that the dust collecting function is good, but a joint that connects to the hose It is easy to remove rubber.
I hope to prevent it from coming off with tape, metal fittings etc.
But it's satisfying to say in ease of use.
Dust treatment is quite different if there is nothing.
However, it is not something that can take 100% dust, I think that it will have excessive expectations because dust will somewhat dance immediately after rotating with a grinder and hitting concrete.
Also, making screws to fix to the grinder is bad, as soon the screws are getting stupid, I think that it would be a good idea to improve there.
If it does not exist, it is serious but I am supposed to have room for improvement and I will make 3 stars.