Mounting rings made of stainless steel 304 diameter 6mm. Ion Plating Multicolor, 20pcs/pack
This steel is not a precious metal, but it is an order of magnitude higher in all respects than other jewelry alloys (brass and zinc alloy). This material has high anti-corrosion properties, does not cause allergies, is resistant to human sweat, sea water and the sun - which will ensure a long life for your product