Brinks Transitional Keyed Entry Ball Door Knob is a perfect combination of style and quality. Designed for traditional and transitional homes, this keyed door knob helps protect your home through locking and unlocking from the exterior. Knob is reversible and can be installed on right or left-hand doors for convenience. Compatible with 2-3/8" or 2-3/4" backset and fits most standard doors measuring from 1-3/8” to 1-3/4” thick. Installation is easy and fits most standard doors. You only need a Phillips screwdriver and a few minutes to dramatically improve the function and appearance of your home. Help control access to standard front, side, and exterior residential doors. Each door knob is designed for security; is pick, bump, and drill resistant; and comes with an anti-pry shield. 2 keys included. A global leader in security-related products and services, the Brinks name is synonymous with top quality products to keep you and your belongings safe.