color picture size 40mm sales model not allow mix order material alloy quantity 10pcs per lot type fashionable trendy sales model not allow mix order for nurse doctor accessories, made of plastic. 1) extension retractable cord with a 360° swivel-back to extend card motion. medical nursing accessories .2) a clear plastic loop with a metal snap to secure your personal id. 3) has a clip on the back to fasten securely to your clothing. 4) measures diameter approx: 1.5 inch 5) quality: high and qualit.syi