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Product description
Size within +/- .0001"
Flatness and parallelism within .0001"
Accuracy and squareness on all sides within .0001"-.0002"
Pairs are matched to a tolerance of 0.0002"
Product application
Used for set-up. layout and inspection jobs
Product features
Has 23 holes with 5 holes tap to 3/8-16 threads for clamping and 18 untapped holes
Made of hardened tool steel and precision ground on all six sides
Cross drilling design allows efficient use of lower weight with maximum strength
Heat treat and hardness 56 to 60 RC
2 pieces per set
Thomas Rowell
2025-09-04 18:57:06
1-2-3-blocks are handy for any shop activity. blocks in plastic box help protect from dents & dings. These blocks are reasonably priced. They come wrapped and coated to prevent rust. Its nice to have cap-head screws and allen-hexwrench included for bolt down. this is good add to any handyman's tool kit
Lacy
2025-08-22 10:24:26
The blocks are super sticky due to the paper they are wrapped in! Nothing some warm water and dawn cant take care of!
John Taylor
2025-03-08 17:56:14
Product was fine. Box was terrible. Never once could secure the latches. Through it out and made my own. There’s tons of 123 blocks on the market, I wanted one that came with a box.
M. Khan
2025-02-18 09:13:40
the Toolly ultra precision 1 – 2–3 blocks do not have the drilled holes threaded all the way through so I could not connect the two units for a measurement I needed tonight.
Ryan Taft
2025-02-16 17:54:40
They came covered in rust, none of the wholes are lined up or tapped correctly so making custom jigs is impossible. Really nice paper weight that’s about it
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