The Accentra MO5307LN-626 is a grade 2 cylindrical lock that has a 2 1/8" bore, and a 2 3/4" backset. The MO stands for Monroe lever, 07 is an Entrance Function Lock. 626/US26D is a Satin Chrome Finish. These come Schlage C Conventional core keyed random with 2 change keys per lock.