Once you have the diameter of the hole, you can then determine the diameter of the stringing material which is appropriate for that bead. In most cases, a bead with a 3mm or larger hole will accommodate the most commonly used cords and yarns. Make sure the hole measures just a bit larger than the diameter of your stringing material to ensure a good fit.
Products sold by Fire Mountain Gems and Beads® are intended for experienced jewelry-makers and designer-artists; children 14 years of age or younger should use these products with adult direction.
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