I bought one of these trowels everal years ago after breaking a few other brands doing planting in my yard.  My soil is very rocky, and other trowels broke where the blade was welded to the handle.  After breaking several I started looking at reviews and bought one of these Corona trowels at a local hardware store.  I've been using it ever since, but recently I found it dull and rather ineffective and so I took a good look at it.  Wow!  It had never broken, but several years of hard use had worn the thing down.  I ordered a new one and just had to take a photo of the old trowel and the new one side-by-side.  I think the photo shows how much hard use this trowel has seen.  The metal blade has been worn away by the rocky, sandy soil, but it never chipped or broke.