Photos also show the catches used on a necklace (not included) for reference. Designed and made in the Welded Bliss studios. A pair of sterling silver interlocking catch fastenings to be used for necklaces and bracelets. Non mechanical locking system. The opening and slide part of the catches need to be married to lock and unlock. Safe and uniquely decorative oval design. The finish is textured satin matt. The perfect finishing touch to any modern necklace or bracelet. Great for beaders, crafters and jewellery designers. Weight 3.9 grams Length of each part is 25.5 mm Width of each part is 12 mm Metal guage 1.3 mm Length when interlocked is 40mm