Ring Guard Wedding / Engagement Ring Guard AdjusterCreate a Custom Fit! SOLD EACH Material: 14 kt Gold Filled Small size: Fit shanks up to 2 mm Medium size: Fit shanks up to 2 mm - 3 mm Large size: Fit shanks up to 2.5mm - 5 mm Jumbo size: Fit shanks up to 5 mm to 7.5 mm Ring Guard InstructionsTools Needed: Pair of Chain Nose or Needle Nose Pliers Step #1: Place the ring guard with arms curved upward. Depending on the style of ring guard some might have arms going opposite directions, both are installed in the same manner. Step #2: Place the ring shank inside the curved arm of the ring guard. Step #3: Push down on ring guard so it takes the shape of the shank. Step #4: Be sure the shank rests at the back of the guard's arm (inside curve) for best fit. Step #5: With pliers, in a circular motion, tighten the ring guard arm to your ring's shank. Step #6: ....until the ring guards arm has gone around the inside of the ring shank and clamp down to tighten. Step #7: Repeat for the second arm. Follow Up: Once the ring guard is in place you may adjust the 'size" of the ring. Just push up (or down) on the middle band of the ring guard to tighten or loosen it on your finger. FAST USA SHIPPER