Loading... Please wait...This is a listing for alloy (NOT STERLING SILVER) grommets for lampwork beads. The interior hole on these grommets measures 4.4mm and are a perfect fit for the Pandora and other European style bracelets. The exterior of the hole portion of the grommet (the part that would slide into the bead) is 5mm. I use 5/32 mandrels and double dip them, and they are perfect for these grommets; they ideally work on the 3/16" mandrel though.