LLDSIMEX Pair - Precision Steel 1-2-3 Blocks: 1x2x3, 23 Holes - High-Quality Industrial Tool Review

I purchased these parts to replace two 3" structural parts. They are perfect for that. Their dimensions are exactly 1x2x3 inches. Rust. You must be able to clean them when you receive them. But they need a rust preventive. 2. DO NOT order them with anything else, at least nothing fragile. Board. Heavy blocks of steel with hard edges have survived with little circuit board, well.

The good news is that they measure 1-2-3 fairly accurately, but they're not very pretty. The holes are rough, at least on the surface. As you can see, the holes on the two edges closest to the camera are not round. They're made up of about a dozen straight cuts, giving them an ugly, uneven look. But that's just cosmetic and you might not notice it. The threaded ones take the screws perfectly and the rest seems straight drilled. Another thing is that the bevels on the edges are cut a little…

Size first; The set I received was as specified. I measured the 1" and 2" sizes with two different micrometers, both of which read within 0.0003" of the spec for the 1" and 2" widths on both blocks. This is within the stated specification of .0005". I've only had one caliper that could measure 3", but it was also within spec for both blocks. The finish of through holes, including tapped holes, is not very good. As others have written. The external surfaces were of good quality and coated in…