For the money they are a good track. They are made with a really good grade of steel, rockwell 50 hardness. however they are relatively thin compared to grouser or loeguring.
This keeps the weight to @ 500 lbs for a set of 10" wide. Conserves fuel and hp and improves flotation over the heavier brands. Easier on the drivetrain too.
However they won't counterweight your machine as much as the heavy brands. Also the pad design tend to pack wet snow inside if used on thawing days in the winter. Not likely a concern for most but just so you know. We have @ 60 sets of these in the field now with very few issues.
Ken