My Bobcat grapple has the standard QA plate but with a small difference. I had to grind on 2 small vertical tabs to get it to fit my ATI QA.
These tabs were only on the attachments for the MT500's and not the other Bobcats.
This is a shame because I could have rented the many attachments that are available for the MT500 (rotary broom, trencher, concrete breaker, etc..) if it were not for these 2 small tabs. I could use them but I would have to modify them.
The standard Bobcat attachments would fit on my QA without mods. but they are way to heavy and require more hydraulic flow then my tractor has. Too bad!!