This is a15 Amp Makita Angle Grinder model GA7911. The type and size welders often use. It has a 9" griding disc on it. It is a heavy grinder but does a good job of grinding metals. I also have extra grinding disc if you are interested. $120
I also have a smaller 4 1/2" angle grinder made by IIT. S1M-115MM. $20