These back parts for earrings come in a convenient 1-pack, making it easy to stock up on extras for those times when you need them. The back parts come in two sizes, which fit most standard earrings. Whether you've lost a back part or simply need some extras on hand, these are the perfect solution to keep your earrings secure. Don't let a missing back part keep you from wearing your favorite earrings - simply add these to your order and have peace of mind knowing you have a spare set at the ready.