Featuring a Lifetime Guarantee, DEFIANT® meets or exceeds ANSI Grade 3 Standards for residential use. The New all-metal Optimum® latch with adjustable backsets and interchangeable faceplates (radius or square) for traditional or drive-in latch installations. Locks can be re-keyed to fit your existing KW1 keyway. The Powder coated finish will provide years of durability. When used as a replacement lock only a screwdriver is need to make installation a snap.