12x22mm gigantic cast white plated base metal economy lobster clasps (lobster claw clasps). These are approximately 12x22x5mm with a 2.4mm inner diameter loop. Gigantic size is easier to open and close. Overall dimensions include loop. White plating is also known as "imitation rhodium" and "silvertone". Questions? Call our friendly sales staff at 1-800-366-2156, or email us.