100% Brand New and High quality,Material: metal,Color: silver,Size: 5\uff1ainner circle length\uff1a49.3mm,inner diameter :15.7 mm , 6\uff1ainner circle length\uff1a51.8mm,inner diameter :16.5 mm , 7\uff1ainner circle length\uff1a54.4mm,inner diameter :17.3 mm , 8\uff1ainner circle length\uff1a56.5mm,inner diameter :18.1 mm ,Quantity: 1pcs