2 pcs Magician PK Ring / Wizard PK Ring (available 18, 19, 20mm) Many Options --Magic Accessories

They are one of the coolest styles available ！

Perfect for Coin Magic etc...

                   Inside Diameter              perimeter

          small     18mm                 56.52mm

          mid       19mm                   59.66mm

          large      20mm                      62.8mm