8" wheels, 1725 rpm's ,white or pink friable wheels. This would be an
ideal grinder.Wish I had it, I have a 6" x 3/4" 3450 rpm grinder
myself. When grinding high speed steel I turn the grinder on, let it
come up to speed, then turn grinder off. Then apply tool to wheel until
wheel stops. This is particularly effective for turning tools.
mike