DOT Durable Plastic Cover Mariner Cap 93-XV-10150-2X in black offers a robust and reliable snap fastener solution for marine canvas and upholstery fabrics. This pack of 1000 plastic snap caps features UV-resistant plastic combined with a strong self-piercing brass eyelet that can pierce thick fabric without pre-punching, ensuring a sturdy snap action that withstands outdoor conditions. Designed to match standard all-brass sizes, these marine-grade caps work with sockets (not included) and are ideal for boat covers, awnings, tents, outdoor furniture, umbrellas, gear bags, and luggage. Engineered for heavy-duty use, the DOT Durable Mariner Cap provides durable fastening with excellent performance in marine and industrial applications, making it a practical choice for enhancing outdoor upholstery and canvas projects.