These metal buttons are 14mm wide, with a shiny finish and a shank with a 2mm hole.
These buttons have a bit of weight to them, with each weighing 1.5 grams. I'd use them sparringly on a lightweight or small item.
These buttons can be used on items that are washed in a washing machine, but like all natural materials will keep its condition better if they are treated gently and hand washed.
Price is per button. There is slight variation in colour between buttons.