Stainless steel grade 304. -Fit for 3.2 mm ball chain size: about 6.91mm wide, 15.5mm long, 4.5mm thick, hole: 3mm; fit for 3mm/3.2mm ball chain. - Fit for 2.4 mm ball chain size: 6mm wide, 14mm long, 4mm thick, hole: 3mm; fit for 2.4mm ball chain.
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