2 pieces/size 316L Surgical Steel Ball Closure Captive Bead Ring. 12G (2.0mm) 10G (2.4mm) - 5/16" (8mm) x 4mm ball. - 3/8" (10mm) x 5mm ball. - 7/16" (11mm) x 4mm ball. - 1/2" (12mm) x 5mm ball. - 5/8" (16mm) x 5mm ball.
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