Beadhoppers brooch cabochon base with 2.5mm threading, 50mm large

This 50mm 2" large brooch / needle cabochon base allows to wear your glass topper with your coat, jacket or scarf for example. Cabochon base with a 4mm high metric threading 2.5mm. Inclusive one protection rubber disc to put between your bead and the disc base and 2 rubber o-rings.

NICKEL FREE Made of brass, covered with a thick layer of pure silver (5-6 micron). Compatible with all existing rings and components with 2.5mm metric threading.