These chisels are poorly sharpened. I'm not talking about factory bevel on the cutting edge, we all know that it needs to be corrected on all but the most expensive tools. I'm talking about everything else in the instrument. The reamer is uneven, the sides are sharpened at what appear to be random angles, and worst of all, the thickness of the tool isn't the same from side to side. None of this renders the tools unusable or, frankly, less productive. This makes sharpening an exercise in patience. Beveled sides make sharp corners difficult. Due to uneven grinding and steel thickness, the bevel changes in a straight line over the edge. The steel is good, the edge is taken well and held quite well.