This CRL Single Mortise Keyed Alike Cylinder has a solid brass housing and supplied with a CRL DRA10 Cam. 1-5/32" (29.4 mm) diameter, 1" (25.4 mm) long 5-pin cylinder, core face is US26D finish, Schlage® 'C' keyway configuration keyed alike. Includes a .117 (3 mm) cylinder ring.