Single Cylinder Function: Baldwin's single cylinder handleset has a keyed cylinder on the exterior and a thumbturn on the interior. Unlocking and locking the deadbolt is done by either a key on the exterior or via the thumbturn on the interior. This handleset includes both the interior and the exterior for a complete entrance solution. Features: Baldwin 5-pin SmartKey Re-Key Technology Guide posts for easy installation Tested to exceed ANSI/BHMA Grade 2 security Reversible handing allows for installation on both left and right handed doors Solid brass deadbolt latch with hardened steel roll pin for additional strength and security Interior comes in same finish as exterior. If split finish is desired, please contact customer service Limited Lifetime Mechanical Warranty and Limited 25 Year Finish Warranty Product Technologies: Solid Brass Construction: Baldwin Reserve Series products are constructed from solid brass - providing a more luxurious, higher quality feel than door hardware made with lesser metals. When you hold a Baldwin product in your hand, you will immediately notice the difference that solid brass makes it is heavier, stronger, and smoother than most of the door hardware on the market today. Specifications: Backset: Adjustable to 2-3/8" or 2-3/4" Cross Bore: 2-1/8" Edge Bore: 1" BHMA Security: Grade 2 Handing: Reversible Door Thickness: 1-3/4" - 2" Latch Faceplate: Round Corner, Square Corner, Drive-In Projection: 2-8/9" Grip Center to Center: 8-13/32" Manufacturer Warranty: Limited Lifetime Mechanical, 25 Year Finish