Tarnish Resistant 304 Stainless Steel Lobster Claw Clasps, Parrot Trigger Clasps, Manual PolishingSize: about 7mm wide, 11mm long, 3.5mm thick, hole: 1.2mmLobster claws clasps are a popular finishing touch to keep designs secure. Best uses for your necklaces and bracelets designs. Stainless steel material creat a sparkling ending for your long wear.Double Sided Manual Polishing: These clasps are hand-polished, which means that the front and back of the clasps are manually put on the polishing wheel to friction, making it more shiny and smoother.