Make Custom Metal Clay and Lampwork Beads...Using these exclusive fine silver threaded bead cores. These bead cores are sized perfectly, and threaded to screw onto the popular Pandora™, Chamilia™, Biagi™, and Trollbeads™ type interchangeable bead charm bracelets.
Inside diameter: 4.5mm (.173")
Width between flares: 9.7mm (.375")
Sold in a package of 4 pieces.