I would be carefull about buying a concrete cutsaw unless you can check the compression first. The concrete dust is great grinding compound and even dual filters don't stop it completely. one of my customers is a bricklayer. A saw lasts him about 1 season before the chrome is worn right through the cyl into the aluminum wall. the chrome is about .010 thick. Iwouldn't buy it unseen. Free advice is cheap but sometimes works!!