WFLNHB 1 Matched Pair Accuracy 1 x 2 x 3 Inch Blocks 23 Holes 0.0002" Machinist 1-2-3 Set

Both 2-4-6 blocks dimensionally within the advertised tolerance on all sides as checked with a recently calibrated Mitutoyo caliper. Have an old set I normally use, but needed to make a jig exactly that size for some work and realized that buying these was cheaper than driving over and buying (or getting one shipped) a block of A36 steel and machining it to a 2x4x6" block. Looks to be decent quality and exactly as advertised. Came packaged in oiled paper that would have kept them rust-free for several decades in a warehouse. For this price, would buy it again if I needed another.

I use these in leatherworking. They make great weights for holding patterns in place. I've also used them as anvils for setting rivets in tight places. They make a decent hammer in a pinch too.

I thought it would be neat to have some solid 123 blocks so I took a chance on these. I checkout out my blocks with my tenths indicator and wow, they're very good. 1" and 2" dimensions were about half a tenth high compared to my gauge blocks and imperceptibly different between the pair, and I could not detect any lack of parallelism. I couldn't get the needle to move past the the first tenths line no matter how I moved the blocks around.The 3" dimensions were the same in terms of match and parallelism but about 2 to 2.5 tenths over 3" compared to my gauge block (and confirmed with micrometer), so that was the only dimension that might start to challenge the claimed 0.0002" accuracy.Overall, these are more consistent and accurate than my other 123 blocks so I think I'll buy some more of these blocks.

these are made of steel and have holes. very hard to review a block of tool steel.

The machinist blocks themselves are fine and will meet the need I have. However, they almost did not arrive. The mailer they were shipped in was not strong enough, it tore, and they arrived at the post office separated from the package. It was only the good work of the postal clerk that saw to it and delivered them to me. They are relatively heavy and need to be shipped in a better mailer.

Addition to any tool shed, these pair of blocks will do the trick for any work that needs small holding blocks, precise 90 degrees angle…

These are high grade, accurately made blocks. Very heavy! Lots of uses in the shop. Great as mini- support blocks when hand-bushing clock movements. Very satisfied with my purchase of these blocks.

They are one two three blocks. They are accurate. Not much else to say.