This Baldwin Hardware 8212 Tahoe double cylinder deadbolt will work on doors with both 2-1/8" and 1-5/8" bore holes. The Baldwin Tahoe deadbolt is constructed of solid brass for strength and smooth operation. Baldwin 8212 deadbolts feature an extended hardened steel insert for maximum protection and security. Meets ANSI Grade 1 requirements. Please call (866)259-8901 if you have any question or would prefer to order by phone. We are here to help!