American Standard Lock https://www.abrainsmartlock.com/product/american-standard-lock/m1-stainless-steel-deadbolt-lock.html - Made from 304 stainless steel, the M1 lock resists corrosion, rust, and physical tampering. It is designed to withstand heavy use while maintaining its appearance and functionality. - The deadbolt mechanism ensures added security, preventing unauthorized entry even if the lock is subjected to external force.