Bests & Worsts Reviews from Amazon

I didn't expect this quality at this price. I ordered these basically for a "beater set" to use at work for things like bolting Destaco clamps to temporary fixtures, rough work, and the general abuse you don't want to subject an expensive pair of matched 1-2-3 blocks to, and would have been satisfied if they were within a few thousanths of nominal dimensions. Just for fun, I decided to check these in the layout lab, and they almost meet the tolerances for matched sets that cost several dozens of times the amount I paid for these. The check was done in an environment and on equipment used to comply with ASME Y14.5 standards in the automotive industry. The worst spot I found when checking parallelism, squareness, flatness, overall dimensions, and variation between the two blocks was a low spot in the center of one of the 2x3 inch faces of one block, and it was only cupped out by 0.00012" maximum depth in an area about the size and shape of a thumbprint. Some things I did not have time to check today were hardness, surface profile, and what grade of steel they are, but by appearances I believe they are likely good quality there as well. They were in a thin cardboard box and wrapped in oil paper, but I'm considering making a nice wooden box for them and going ahead and certifying them for actual toleranced work if the hardness checks out like the rest did. And yes, I'll be ordering more soon.