Two Replacement Backs for 1000 Jewels Screw Back Earrings, 925 Sterling Silver One pair or two (2) backs for screw back earrings from 1000 Jewels only. Style or Setting: Backing for screw back earrings for pierced ears Made with solid 925 Sterling Silver. These are designed for 1000 Jewels Sterling Silver screw-back earrings ONLY. They are not designed to fit on White Gold, Yellow Gold or Platinum posts. Check our other listings for white gold and yellow gold screw back replacement backs.