Ritastephens 14k Yellow Gold Lobster Catch Lock Replacement Large (12.5) Measures about 12.5mm long and weighs about 1.1 grams Beautifully crafted and well designed Hypoallergenic and Nickel Free 14 karat gold lobster clasp with an open Jump ring included. PICTURES ENLARGED TO SHOW DETAILS. SEE LISTING DETAILS FOR SIZE.