These vary spacious 14k yellow gold rivet lobsters have an attached spring ring. You can use the spring ring as a bail or clip into links that may otherwise have to big of a circumference to run through as a bail.
Large: Length >1" including bail. Bail opening - 4.4. Width - 5/16". 1.72g. Arm thickness - 1.7x1mm for the bottom half of clasp. Charm bails must be larger than this to fit. Spring ring opening - 1.3mm. Links must be less than 1.3mm thickness to fit into spring ring opening. Please note there is a little tightness in the link between spring ring and lobster, so it moves freely in most positions, but can get caught up in extreme angles.
Medium: Length - 13/16" including bail. Bail opening - 3.5mm. Width - 1/4". .75g. Arm thickness - 1.4x.7mm for the bottom half of clasp. Charm bails must be larger than this to fit. Spring ring opening - 1.1mm. Links must be less than 1.3mm thickness to fit into spring ring opening.
