The Vantage Presslok 3" Shutter Fasteners 12 Pack in Black are designed for outdoor use, specifically for mounting exterior shutters. Made in the United States by the brand Vantage, these fasteners are a suitable choice for securing shutters on the outside of a home. The pack includes 12 black fasteners, each measuring 3 inches in length, providing a secure and durable mounting solution for shutters.