This grinder has some good power and a solid build. Doesn't bog down and the battery puts out plenty of juice to keep up good torque. The battery lasts a good while too and charges quickly with the fast charger. I used this to grind off some rusted panels on a car an grind off some surface rust. Case is nice, a little flimsy but good enough for storing it and having an easier way to carry on the go. You don't really need much more. All the info is in the listing for what size disc and everything you need to know. I was surprised how much the brushless motor can actually put out. Remember it's 4" discs with 5/8" arbor hole.