This Brooch is 1.5" (4cm) in Diametre with an interlace celtic pattern. Made in a chrome finish. We have 3 styles to choose from. These Brooches are a traditional method of fastening the Fly Plaid. The Fly Plaid is an added form of a pleated cloth in the same tartan as your kilt, and it is worn over the left shoulder and fastened in front. These are commonly worn for formal occasions such as weddings, dining and other celebrations. Also Women could wear this with a tartan sash.