Convenient and practical: 12pcs ring sizer adjusters in 4 different sizes to fit any ring size. Easy to use: simply slide the ring adjuster onto the band of your ring to tighten loose rings instantly. Transparent design: made of clear plastic that is virtually invisible on your ring. Suitable for all: perfect for both women and men's rings. Save money: no need to resize your rings at the jeweler, save money and time with this ring sizer adjuster set.