WFLNHB Parallel Blocks 20 Pairs 1/32 Inch Steel Parallel Block Set 0.0001 Inch Hardened Accuracy Machinist Tools in Case

Mixed bag here for me. From what I can tell with a decent .00000 mic, they are within a half thou. Some better than others. They took a couple of hours to debarred the edges. Only two swipes of 4/0 steel wool on tops. For the cost $2 per set, they are surprisingly good. If you are working in thou, you should be fine; if you are working in tenths probably not. I’ll use my thicker set for that. These should be great for my retired hobby applications.