These straight 16-gauge brad nails are 2-1/2" in length. They are galvanized nails not for use in cedar, redwood, treated wood or exposed applications. Common applications include trim, paneling, and cabinetry. They are compatible with the following Metabo HPT nailers: NT65A5, NT65M2S, NT1865DM. They are also compatible with most 16-gauge straight finish nailers.