Very useful sticks, perfectly flat on my cheap surface plate, that's all I can ask for in my shop. The edges are REALLY sharp. I'm sure there's a reason they didn't break, but I don't know. When I say sharp, think cut my finger, degrees of sharpness. They should definitely be treated with respect as they are the reference surface and should not be dropped, hit etc. If you cut yourself like me, only do it once. I wish the bars themselves were a bit taller, that's my only complaint. They're ok and I know this will mean higher cash prices, but they're maybe 1/2 inch below what I would have preferred. But there are no points for that. The best way to store them On a shelf, in my experience, they tend to fall off and dig in.