That's what MZ calls them, anyway.
I bought in sight unseen, hoping to add a little armor for the engine covers. The product delivered (from SF Moto. Thanks, Mike!) is more like a cross between a skid plate and engine bars. The front and bottom are protected, but nothing is provided to wrap around the sides.
I have not seen photos of them here, so I'll try to attach a few.
The installation is simple: Remove two bolts, hold the unit in place, replace two bolts. The bolts are 6mm and 8mm socket heads, if I recall correctly.