The Schlage F-Series knobs and levers offer the benefit of over 90-Years of Schlage quality design and workmanship. With a range of knobs and levers in a variety of finishes, Schlage has a lockset to complement any architectural style. These value-engineered locksets are built to last. Lifetime mechanical, lifetime on satin nickel and polished brass finishes. 10-Years on satin chrome and antique brass.