Kwikset 975 3 CP Maximum Security Double-Cylinder Deadbolt, Polished Brass Double-cylinder deadbolt lock for residential entryways 6-way adjustable latch fits square-corner, round-corner or drive-in applications Adjustable to 2-3/8- or 2-3/4-inch backsets; 1-inch deadbolt throw Easy to install with Philips screwdriver; meets ANSI/BHMA Grade-2 security standards Lifetime mechanical and 5-year finish warranties from the manufacturer