Grade 3 security. Packaged adjustable latch (AL), interchangeable for 2-3/8'' or 2-3/4'' backsets with a square face, radius corner face and round face (RFL) deadbolt latch. Key retracts bolt from exterior, turnpiece operates bolt from interior. Full 10 year mechanical warranty. 5 year finish warranty. Keying information: Code K6: Order full case of 6 and receive 6 keyed alike. No. 660 3 CP K6: Polished (3) No. 660 5 CP K6: Antique brass (5) No. 660 26D CP K6: Satin chrome (26D) No. 660 15 CP K6: Satin nickel (15)