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How many kilograms is the tension of 0.45 flat skin tendon?
The pulling force is below 12kg.

The tensile force of 8mm or 9mm flat skin tendon is 18-25 kg, that of 6mm flat skin tendon is 12- 18 kg, 0.45 belongs to 4.5mm, and the tensile force is below 12 kg.

Rubber band refers to rubber band, elastic band, etc. This is a rubber, elastic and children's entertainment project.