Illnois strop metal attachment piece, where to get?

[alitkty]

Hi,
Where can I get Illınois strop metal attachment piece for custom made strops? Please see the photo below, dont know its name:
http://postimage.org/image/pudaf761t/

Thanks.

 

[Wid]

http://www.whippeddog.com/products/view/buckle-sold-separately-bu