This 12/20 yellow gold-filled hook & eye clasp features a doubled-wire hook and two-ring eye and is fabricated from 21-gauge wire. Double-ring eyes allow you to tie off the strand using one eye, leaving the other eye clear for easy attachment to the hook component. A hook & eye clasp is a two-part clasp that closes by simply sliding the hook through the eye. This clasp tends to be larger than other clasp types and is ideal for larger designs, bead strands or bib-style necklaces; it relies on the necklace having enough weight to keep the clasp secure. Gold-filled clasps deliver karat gold at a more affordable cost than solid gold, allowing you to design with the touch of precious metal customers look for and to offer your designs at a price customers appreciate.