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size M20 Carbon Steel grade 8
The puzzle comes presented in a turquoise sliding-lid tin
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Brass Monkey Five
But as far as we know
Six Hookers Metal size M20 Carbon Steel gradeWe were browsing through some expired patents and found this design in a patent by Lynn Yarborough. The square version was entered into the Nob Yoshigahara Puzzle Design Competition some years ago. Bits and Pieces also made a commercial version. With the patent long expired we thought we make a the hexagonal version which has never previously been available. The goal is simply to assemble the six identical hookers. Each hooker is about 65mm long and
