Your rich woolen cloak cannot hang by a frail, low-quality mere fibula. It needs this stout HAND FORGED fibula to hold it in place during your quests in the wild. Skillfully HAND FORGED from SOLID IRON, this brooch offers immense longevity. Its inner diameter is approximately 8 cm, and the pin is highly adjustable. Note: This product is carefully coated with a layer of oil when packaged that acts as a temporary (protective) layer against corrosion (rust), which can easily be wiped off using any oil remover or even a dry cloth. HOW TO USE YOUR FIBULA / BROOCH: Pierce the cloth where you want your fibula to be holding your cloak. Then pass the pin between the ends of the ring. And rotate the ring 90 degrees under the pin tip. Once you let it go, the fabric instantly presses the pin on the ring itself and keeps the fibula closed.