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The original curved, tapered aluminum nut that gives three points of contact for a stable, reliable placement. The set covers a range from 0.38 to 1 inch. These and a set of Robots are the backbone of a lead rack. All the Alu-Nuts are wired so they are dependably strong (8 to 12 kN)!

Size	Strength
1	8 kN
2	8 kN
3	8 kN
4	10 kN
5	10 kN
6	10 kN
7	10 kN
8	12 kN
9	12 kN