This washer is used for e.g. riveting ornamental fittings to straps. First you make holes to the strap and put the fitting pins through it. Then you put the washer on the pin. At last you hammer the pin to rivet the fitting to the strap.
|inner diameter||2.2 mm||2.5 mm||3.2 mm|
|outer diameter||3.9 mm||4.3 mm||5.0 mm|
delivery content: 5 pcs