Stainless Steel Kidney Ear Wire.

Choose from pack quantity of  21 gauge

(Note, Stainless Steel Colour)

After attaching drop, use round-nose pliers to crimp loop closed. 
This keeps your drop in place. 

You can also string beads directly onto the wire (a French wire keeper, 
Bead Bumper or small crimp will hold beads 
in place when wire is opened/closed).