Hi Norm

Concrete insert wheels
Really? Never heard of such an item. Photos & description please.

I really do not think wheel damage is much of an issue with a simple homemade deflector
Not even that much of the clippings seem to exit at the front. Most of it just hits the back on the L shaped piece of metal then shoots to the side.

Ordinary Victa wheels are fine. Not that the concrete inserts are not a bad idea.

Jeff