I can see the purpose of the edge markers if running on the street and you want to let other vehicles know where the blade is, but I don't really see a need for them if you stay on your property. Perhaps I'm missing something .... oh yeah .... both edge markers!
If I were to replace them, I would look for an edge marker with a spring mount of some sort so that they can move without breaking off, but the ones you got do look to be well designed and virtually indestructible and maybe the best deal out there.
Hopefully the product is better than their spelling abilities.
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