Each band 1.5 mm wide _ approximate weight 1.85 gr.
Each band 2 mm wide _ approximate weight 3 gr.
Each band 2.5 mm wide _ approximate weight 3.35 gr.
Each band 3 mm wide _ approximate weight 3.75 gr.
Each band 3.5 mm wide _ approximate weight 5 gr.
Each band 4 mm wide _ approximate weight 5.70 gr.
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