What is a common application for duplex nails?

Duplex nails are designed with two heads that allow for easy removal, making them particularly well-suited for temporary construction. In situations where structures or forms need to be quickly assembled and disassembled, such as in scaffolding or temporary support systems, duplex nails are used. The extra head provides a gripping point for pulling the nail out when the temporary structure is no longer needed, allowing for efficient breakdown without damage to the main materials used. This characteristic distinguishes duplex nails from standard nails that are typically used for more permanent fixtures and applications, such as framing or finish carpentry.