Feature

●18mm: inner diameter 18mm, perimeter 56.54mm 19mm: inner diameter 19mm, perimeter 59.66mm 20mm: Inner diameter 20mm, Circumference 62.8mm 21mm: Inner diameter 0.8 inch (21 mm), Circumference 2.6 inch (65.94 mm)
●Buyer take one cotton thread and measure the circumference of the ring around the base of the finger where the ring was put on
●The circumference measured is around the product
●Easy to operate, so you can enjoy your magician performance anytime, anywhere
●Portable and durable, this item is a necessary item for stage and business presentation


Description

18mm: Inner diameter 18mm, Circumference 56.54mm
19mm: Inner diameter 19mm, Circumference 59.66mm
20mm: Inner diameter 0.8 inches (20 mm), Circumference 2.5 inches (62.8 mm).
21mm: Inner diameter 0.8 inch (21 mm), Circumference 2.6 inch (65.94 mm).

Buyer take one cotton thread and measure the circumference of the ring around the base of the finger where the ring was put on.
The circumference measured is around the product.