Use it a while before you decide. I have the same kind of accessory that fits one of my angle grinders- - - - -even with a speed control attached, it goes through belts in a big hurry, and there are still jobs my three bench grinders do best. They're set up for different jobs- - - - -wire wheel buffing, metal polishing with muslin and hard felt wheels, grinding high speed steel and carbide machine tool bits, etc.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!