Silver/Black Rare earth Magnetic Ring,if you are looking for a perfect PK ring, this one is your best option.the appearance is just like a common ring, yet with a strong Magnet, it allows you to create ultimate effects such as ?coin through glass?,?unseen force?.....and so on /// How to choose the suitable magnetic ring finger? You can select a sewing line, around the finger root wearing magnetic ring (third) a week, then the section of the line with a ruler to measure the length, this means you finger to wear magnetic ring inner perimeter, is 62.8mm, 59.6mm or 56.5mm * Fast shipping Additional Details ------------------------------ Is autographed: false Is memorabilia: false