Lanyards with retractable pull. Our 18MM Sandy Snap Charms snap into this Interchangeable Charm Lanyard to create your own customized piece of jewelry. Sandy Snaps are unique because they allow you to change your color and designs daily. You can basically turn one necklace, bracelet or pair of earrings into 50 with just a snap! Start by choosing your favorite piece of jewelry and then pick out a few Sandy Snap charms just like this one and you are all set. These make great gifts!