This product is in Beta, this is why the price in printing and material cost only.
Please if you try this ring, share comments and pictures.
Inside diameter: 19.6
UK and Australia: T
Europe: between 61 and 62
US & Canada: between 91/2 and 10
Singapore & Japan: between 19 and 20
Hong kong: between 22 and 23
Switzerland: 21 1/2