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

Blocks are perfectly machines and sized exactly. Every hole is tapped which makes creating jigs real easy. Cant be beat for the price. In fact, Im going to order a couple more!

These come wrapped in paper that is saturated with motor oil.

If you dont have any, get some. Get several. The uses are endless. Do keep them oiled though. Rust will effect accuracy.

For the money you cant touch them. First pair was almost a perfect match. 8 months later I bought a second pair with a little better match. A little touch with the surface grinder and I have two set precision matched blocks. Will be buying more.

I like these overall. They are square. But the holes are very inconsistent. I got them to go with my fence clamp and only 1 had holes that would take the clamp and 5/8 bolt all over.

Not really concerned about .00001 accuracy etc. Just want a stable flat surface of equal height when fixturing.

I just got a pair of these and removed them from the plastic bag, removed the paper soaked in oil, gleaned them up and Wow. I used my micrometer to measure them and they were exactly, 1, 2, 3 inches in size. I put pairs together and they were exactly 2, 4, and 6 inches in size. You cannot beat that.

No specification for accuracy provided in listing. After knocking down any burrs with a set of precision ground flat stones dimensions as measured by tenths micrometers were within 3 tenths, over on the 1 side and under on the 2 and 3 inch sides. Not bad for the price.

Ok for most work. Wish I could fine a true 3 block set, alittle bigger. These are only 3 long.

No wax coating but nicely oiled and wrapped. On initial inspection it seems the 1” is out by under a thousandth (digimatic reads 5 tenths) and the 2 and 3 inch sides are dead nuts. Haven’t checked the threads but all seems to be fairly impressive for the price