Helo everyone i am going to buy angle grinder which will be mostly used for cutting steel. Grinders smaller than 7 in (180 mm) aren't a option. Grinders larger than 9 in aren't a option neither. So 7 in or 9 in?
7 in (180 mm) has sped ~8.600 RPM and 9 in (230 mm) has speed ~6.600 RPM.
Just added:
9 in = 2.000 W (watts)
7 in = 2.600 W (watts)
And it's gonna be "BOSCH Professional", not hobby. Both are 80 M/S (meters in second).