Material: stainless steel
The sizes you can customize is the ring's inner diameter,its width,its height.
However,because of the material limitation,the total of inner diameter+width*2 can't over 75mm.For exmaple,inner diameter 35mm,witdth 20mm,doesn't over 75mm totally,it can be made.But inner diameter 38mm,width 20mm,total 78mm,over 75mm,it can't be made.
The ring can be matt polished or mirror polished,choose the style you want when order.