Diameter ring: 2 cm<br><br><img src="http://gdetail.image-gmkt.com/004/604597139/2016/1/2a1c1cf7-e942-4489-ab63-4d59b7322208.jpg" undefined="" width="940" height="940"><br><img src="http://gdetail.image-gmkt.com/004/604597139/2016/1/6f0cecab-9ae8-4f08-9d31-c48d5610e2aa.jpg" undefined="" width="940" height="940"><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>