A ring with double lines.Also known as double can or nicoyl.It is often used for key chains.
It is a standard part that is convenient for passing keys and connecting parts.

Stainless steel is resistant to metal allergies and rust, and has a strong presence and luxury due to the texture of the unsurfaced fabric and the flat pressed surface.The flat surface reflects light and shines more matte than nickel-plated ones.
It is also recommended for parts of apparel supplies.
In addition, with nickel-plated double rings made of iron, darkening can occur on the overlapping inner parts, but since this double ring is made of stainless steel, darkening will not occur.