Use this 20mm silver-plated interchangeable bail to display your unique components and create a special focal point for your next necklace. This large jewelry bail features a smooth bell shape and is finished with a silver shine. This bail slides back and forth to open so you can always change what it will hold. Designed to hold 20mm Swarovski 4439 and Swarovski 4437 square rings, this finding is perfect for making a pendant with your favorite shapes. This bail will work best if you slide the front of the bail through the back of the crystal.