They are quality solid brass button studs. [ Brass - Nickel / Screw back ]
This is suitable for use in button of leather accessories.
For example, Coin case, Leather strap, Leather bracelet and more.
This hook is made by skilled Japanese craftsmen.
Size / See the 3rd picture of dimensions in each part.
Material / Solid brass
Color / Brass, Nickel
Weight / 1.5 g ( 1 set )