660 15 CO K6, Kwikset Security, satin nickel finish, single cylinder deadbolt, Grade 3. Round corner adjustable steel latch fits both 2-3/8" & 2-3/4" backsets. Round corner strike. Keyed alike in sets of 6. Lifetime mechanical warranty. Lifetime finish warranty. (KA6) - Keyed alike in a case of 6. Clear pack.