The antiqued brass plating on these lobster clasps gives them a rustic warm feeling that looks great on artisan jewelry. Sizes come in 10mm to 22mm long, offering versatility for use on a variety of necklaces, bracelets, and craft applications. Brass-core clasps are sold by the dozen. Economy antiqued brass plated zinc clasps are sold by the half-gross (72 pieces). Size mixes are sold by the gross (144 pieces).