WEN 10423 3 x 2 x 1-Inch Steel-Hardened Precision 123 Blocks, Two Pack

Great product. Sucked opening them as they are wrapped in a oil paper and are really greasy. Im sure to prevent them from rusting as they are not coated with a clear coat . They are accurate and have many uses

They are working

For the thousandth time; you cannot send precision tools, micrometers, dial caliper’s, dial indicator’s, 123,246, blocks in a brown paper lunch bag!! It has to be shipped and protected in a box!!!!!!

According to my digital calipers these blocks measure dead-on accurate! I am impressed!

Got these a few days ago and was pleasantly with how accurate and well made they are. Checked all sides for accuracy and squareness using calipers for size and a combo square for squareness. They seem to dead on accurate, excellent product.

Muy bien trabajado

Well packaged to prevent rust & damage in transit. Measured within advertised specs for accuracy. A great little bargain.

Measured the blocks with my Mitutoyo calipers and every dimensions came out within +/- 0.0005 (half a thousandth). Was not expecting that level of accuracy for $20. Surface finish was good and no issues with burrs or sharp edges around the holes or on the chamfers as I read in reviews for other manufacturers. Havent tested the threaded holes, but I personally dont intend to use them. Came with protective oil. I cleaned off for use but applied a light coat afterwards with the rag-in-a-can method to keep these from rusting over time. (Ive seen some people complain about rust, but unless your tools are made of stainless steel you need to take some measure to prevent rust.) Highly recommend. Worth every penny.

I wasn’t expecting high precision in the slightest. With that being said, I bought two sets. The range between all four blocks was 0-.004. On all 3 sides, in comparison to the other blocks. Not very accurate. But solid for rough work.

Once I cleaned off all the oil from shipping the calipers show me the measurements were over/under by 0.02mm. Very happy all sides were also SQUARE and flat. No dented corners or sides.