-Material: 316LTitanium Steel (hard,bright,no discolouration, no allergies)-8 Size diameter 18.1MM, width 26MM / 9 Size diameter 18.9MM, width 26MM / 10 Size diameter 19.8MM, width 26MM / 11 Size diameter 20.5MM, width 26MM / 12 Size diameter 21.4MM, width 26MM / 13 Size diameter 22.2MM, width 26MM-Polishing process-Slip on style-Fashion accessories-With Gift Box Twenty Eight Shoes Titanium Steel Skull Black Diamond Fist Ring GY538