*Metal: Stainless Steel
*Finishing: Polished
*Gauge: 1.1MM(0.04")thick;
*20MM: Dimension: length: 20MM(0.79"); width: 20MM(0.79");Inner Diameter: 15MM(0.59");Weight: 2.4g
*30MM: Dimension: length: 30MM(1.18"); width: 30MM(1.18");Inner Diameter: 25MM(0.98");Weight: 4g
*40MM: Dimension: length: 41MM(1.61"); width: 2MM(0.08"); Inner Diameter: 35MM(1.38");Weight: 5.6g
*39MM: Dimension: width: 46MM(1.81"); Inner Diameter:39MM(1.54");Weight: 10g
*50MM: Dimension: width: 50MM(1.97"); Inner Diameter: 45MM(1.77");Weight: 7g
*60MM: Dimension:65MM(2.56")long x2MM(0.08")thick x63MM(2.48")wide;Inner Diameter: 55MM(2.17");Weight:9.4g
; *70MM: Dimension: width: 70MM(2.76");Inner Diameter: 65MM(2.56");Weight: 10g
*80MM: Dimension: width: 80MM(3.15");Inner Diameter: 75MM(2.95");Weight: 11.7g
*90MM: Dimension: Width: 90MM(3.54");Inner Diameter:85MM(3.35");Weight: 13.6g
*100MM: Dimension: Width: 100MM(3.94");Inner Diameter:95MM(3.74");Weight: 14.9g
*Package: Jewelry Box with Brand Name COOLSTEELANDBEYOND