From the Amazon description "The grate is constructed from 1/4"" solid stainless rod, not plated steel like the cheaper imports, spaced 5/8" apart"
IMO that is even worse than the oem grates which are poor at best. At 5/8" spacing you can drop an entire steak through there! Forget about trying to grill veg, or shrimp. Better off buying the Weber porcelain cast iron grates at 1/2 the cost. And at $96 it's not saving THAT much over RC's grates. And yes you are better off with the stamped grates