Single hole extends vertically downward along the bead for threading
100% new high quality

 

3mm - outer diameter 3mm, aperture approximately 1.2mm; 
4mm - outer diameter 4mm, aperture approximately 1.5mm; 
5mm - outer diameter 5mm, aperture approximately 1.5mm; 
6mm - outer diameter 6mm, aperture approximately 1.5mm; 
8mm - outer diameter 8mm, aperture approximately 2.0mm;

10mm - outer diameter 8mm, aperture approximately 2.5mm;

Material: copper
Color: gold
Quantity: 10pcs / package

There could be some slight differences in the color tone of the pictures and the actual item.
Please allow 1-3MM differs due to manual measurement, thanks.
Package Included: 10pcs