Authentic Birkenstock hardware with black finish.
Measurement is the pin/bar length, see photo for example.
**Regarding Shipping: Website does not allow numerous shipping methods so all items are priced with a USPS Medium Flat Rate Priority Mail box. I do fit purchases in the smallest box/envelope possible & shop for the cheapest shipping method.
If you are only purchasing buckles I can fit them in a small shipping envelope. The estimated shipping cost is $5-8 this depends on where I ship to as I am shipping from Oakland, CA. I refund any shipping difference after I ship items.
Thank you for your understanding.