15 mm diameter x 2.2 mm thick / Brass 0.5 g / $ 2
18 mm diameter x 2.8 mm thick / Brass 2.5 g / $ 2
21 mm diameter x 2.8 mm thick / Brass 3.5 g / $ 2

This is a quality solid brass circle ring.
 
This is suitable for use in strap or joint of leather accessories.
This ring is made by skilled Japanese craftsmen.
 
Material / Solid brass
 
Color / Raw brass
 
Weight / 0.5 g ~ 3.5 g