This Frizzen cover is used to cover your frizzen on your flint lock musket to prevent accidental firing. This is used for a safety precaution during reenactments or for live firing. Safety is always a good. This will fit the Brown Bess and charleville muskets. The cover is made of leather and comes with a leather lace to attach to your trigger guard. These are hand cut and sewn here in our office in Ohio. They are made in different colors of leather.